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Holley sniper afr settings

holley sniper afr settings When I finished the install on my C10, I set it as follows: 13. based on the actual reading, which solves the problem for altitude changes . Prior to Sniper Holley offered the Avenger 4bbl TBI with their self learning ecu for around $2,300. A straight-forward setup process is detailed in the full installation manual. The Holley Sniper throttle body looks very much like a AFB or Edelbrock carb, laid out in a somewhat square architecture. I would like to know how to proceed to escalate this issue to Holley. I called the Holley tech line twice but sat on hold both times for over an hour but never got thru to anyone. 6 and stays there. Needle - Used to determine your current operating AFR and also your mode settings by moving throughout the range of the gauge. Then wait until your temp is over 160*, and then follow the idle setting procedure in the Holley manual. Ford Inline Six, 200, 250, 4. Setting the idle mixture and speed on a carburetor isn't the most exciting or elegant subject, but it is a necessary adjustment that often is overlooked or worse, set up incorrectly. it: Carb 800 Cfm . Getting the throttle blades and IAC to work together will keep your fuel injected hot rod running smooth and predictable. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. All went well except idle seems rich. And This Holley sniper is brand new, including new tank/lines/ in tank pump ect. Holley really cant give me answer why it has the 800 hp cut off. Views: 49383: Published: 16. Tags: Video, tech, Sniper EFI Videos, Sniper EFI Tech, Sniper EFI, sniper, Installation. For example, if stoichiometric is 14. About Engine 632 Ci I recently installed the Holley Sniper on my SBF 302 in my 1980 Mercury Capri. I have a 351C and Edelbrock Air-Gap with a 1/4" spacer, a drop-base air cleaner bottom, 3" filter and stock air cleaner top and clearance is very tight. From one day to another it goes up to 35. About Engine 632 Ci Views: 34509: Published: 30. 7:1, run no leaner than 11% rich for lightly-loaded, normally-aspirated water-cooled engines (~13. Ultimately, I ordered everything from Holley and all in I'd say my total spend was around $2000. 2. Keep in mind the manual wanted the pump lower than the lowest point of the tank, which is not really possible on the Jeep. Holley came out with the Sniper EFI 4150 not long ago, and it made quite a splash. Use the idle speed screw to set the idle at a comfortable warm-up speed. Holley has released the Super Sniper which is a 1,250hp capable version of the popular Sniper bolt on EFI system that the company has been selling for a few years. 1) When the 40 is cold or warm and I decelerate to a stop, the AFR jumps up to 18-20 while the idle goes to about 75 less than target. 2021: Author: ristopizza. It felt like it was going to stall out at stop AFR heads, 1. One of the great features of Holley’s Sniper is the ability to set your air/fuel ratio (AFR) where you want it. If you are not happy, you can create a dlz file and send to Holley for their advice. 2 at cruise, and 12. 7AFR so the engine wont stall out when pressing down on gas while in idle/ At the regular 13. ) except for the engine being an LT-1 with decent sized (253/259 @. The AFR at that time is about 15:1 16:1, and corrects itself quickly to 13:1 Also have noticed a exhaust pop and a leaner AFR on closed. § Idle Air/Fuel Ratio – Typically between 13. It has to be mixed with air. The PDF installation instructions are on their Green Chile. 6 lb/hr Idle is set at 725 rpm I've been running the stock settings for a few months now on my Sniper 2300, seems like it does well with those. MGB - Holley Sniper. 4MPI pump, never falls below 58 How To Use Holley Sniper Software . Both the Sniper EFI system and the Sniper Handheld Controller have termination resistors built into the devices. AFR The perfect Air to Fuel Ratio is known as stoichiometric (german word). Again, a far improved solution is available in the base tunes available in the Terminator X software. O2 Sensor Mounting: The O2 needs to be mounted 6-8” after the merge in the header collector. So the system seems to be doing what it's supposed to be doing. My engine is 355ci, 11. Injectors, Kit Part Number: SNE-550-870 Hi all, I put a holley sniper on Russtoy, my 69 Charger with a 512 stroker, hughes 232/236 cam, cast 452 ported heads, 727 trans, 2000 stall convert, 356 gears. 1. 3 air to 1 fuel. Things such as Rev Limit, Temps, MAP, TPS, AFR, Timing, Enrichment, Idle Control, etc. #4 · Jan 25, 2020. Discussion Starter · #1 · Jun 29, 2019. 5* reference angle, clear cap used to phase rotor while engine was at 0* top dead center (verified I reprogramed the Sniper several times. I spent some time cleaning up older wiring and installing the new EFI stuff. At some point, you'll want to transfer that learn to base. it: Bbc heads . It supports up to 175 HP. 5 to 7. Installed it about 1/2 hour before quitting time, and then turned CLOSED LOOP back on and fired it up. Garmin GPS USB Drivers support Windows XP 64-bit, Vista 64-bit, and Windows 7 64-bit. I would start by changing to "simple" timing settings, go 15 initial, 40 cruise and 36 at WOT, also may want to consider crank at 15. 5 and WOT at 12. Iwould need to search for the Cam specs but in the settings I put it on #2 Street/strip. 199r 8446 holley contender manifold for small block, edelbrock intake manifold ports on sb 78 chevy yahoo, small block chevy intake manifold ebay, amazon com aluminum block manifold, edelbrock 2101 performer intake manifold, sniper sheet metal fabricated intake manifold small block, question on vacuum EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. 73 12-bolt Eaton posi differential. About Ls Computer Tuning Views: 49383: Published: 16. Many times a carburetor is looked at as the prime culprit or the main cause for a myriad of other engine-related difficulties that Sniper EFI Initial Startup and Troubleshooting. I'm sure some wizards can get a Carb setup to run incredible as well; however, with the Holley Sniper it's like snapping your fingers. What kind of fuel pump are you using. cheers Mark. Engines with larger cams may need a richer setting for smoothest idle. It’s just not going to work as well and be as reliable as their higher dollar systems. We included scoop mounts on top of the throttle body and all of the dimensions of the unit are similar to a 4500 carburetor to make swapping simple. Contributed By: Enginebasics. So I was able to first get it running using the exterior pump as Holley had an 8 week lead time. The only issue I'm currently trying to resolve is it likes to bog down when I hammer down on the throttle. Holley is putting much more development into Sniper EFI. However, it continued to just miss the mark with serious racers because it was limited in the amount of horsepower it could support. The car runs amazing with the Sniper when started cold and driving. com product pages for the Super Sniper (all colors, both 4- and 8-injector models) it says, "E-85 - Not Recommended" without giving any idea why. I am currently looking to put a Holley Terminator Stealth 550-442 P. This isn’t the last you’ll hear about this Sniper EFI install. The Sniper is the same hight as a Holley carburetor so you can't blame it. EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. 7 parts air to one part fuel. p-table-wra Indian Road Accident Dead Body Pics I recently installed the Holley Sniper on my SBF 302 in my 1980 Mercury Capri. Taking off the RPMs climb really quick before clutch engages so you either squawk or take off quickly, shifting has to be done quickly as well, or RPMs drop. Without the engine running, AFR will read 35. I knew id have issues with cold starts etc, engine My Bronco with Holley Sniper EFI was running poorly. /hr. About Ls Computer Tuning Yep, the Sniper is officially off my list, dammit. I also noted that after some time, I could change those values as I saw fit. As far as the Fuel decel wait time, holley recommends . I had to make adapters to go from the I recently installed the Holley Sniper on my SBF 302 in my 1980 Mercury Capri. 6:1, as richer AFR's mean lower cylinder temps (insurance for Holley). 0. 0 and the Cruise AFR to 15. You should then have at least 18-24” of pipe after the sensor. It has the Holley trademark and will be supported for a long time. 0, The WOT AFT to 13. 5 Holley Super Sniper HP EFI Install: Advanced Features May 11, 2018 Mike Aguilar Fuel Delivery , Galleries , How-To and Tech Tips , News , Slideshow 2 Click Here to Begin Slideshow Not long ago, I introduced you to Holley’s Sniper EFI 4150 Super Sniper EFI, a TBI-style fuel injection system that can support up to a whopping 1250 HP. We’re going to look at the MSD (magnetic) Distributor and Holley’s Dual Sync EFI Distributor. Sinnamon: 1969 Charger R/T - T5 440, 727, 3. 3 or 13. It felt like it was flooding out at low speed, low RPM. The set up calls for two AFR values 1 at idle and another one. all at your fingertips. On the Holley . 2021: Author: piattaformeescaleaeree. 5 to 2. Try setting the idle to 750 (you will have to adjust the So after a couple of runs today targeting a 12. 6, I already changed the oxygen sensor and it stays the same, at 35. Location. When I tried to set leaner cruise AFR she did not respond well so I am still experimenting. Apr 27, 2018 · 3500 Stall (TH350 / 3. 5-1 comp, huge cam, 264/268@50 on a 108 lsa, mated up to a 6000rpm converter. Different fuels have different weights and work best at different air/fuel ratios. AFR tells you how many parts of air are mixed with each part of fuel. The Sniper will control the ignition firing but you need an MSD or Holley Dual Sync distributor to lock out any mechanical advance. I recently finished the full install of the sniper EFI system, sniper fuel tank w/ internal fuel pump along with the hyperspark ignition and timing. Robinson Death Notice Robinson Death Notice . 0, cruise at 14. Nothing in Holley's instructions manuals for any of the systems (Stealth 4500, Super Sniper, Sniper 4150, or Sniper 2300) say what fuel can be used with the system. The gauge should also be installed with great care. I had to set the Target AFR at Idle to 10. And it bolts on the same as the carb. 233/[email protected]", 620. 2 block, TFS T/W 11R 205 heads, 232°-244° duration/. The following are typical values and some tuning notes. I had a Weber DGV manifold lying around so I made an adapter to 1V. 23. 6 Holley has done a great job getting these snipers to work outside of the base afr and timing settings. Sniper EFI Idle Tuning. Well after saving for a bit I was able to buy the EFI kit that I wanted. General Boating Discussion - Holley sniper efi - Originally Posted by 12meter Looks very similar how mine would have to be set up. About Bbc heads 1000 hp 496 bbc General Boating Discussion - Holley sniper efi - Originally Posted by 12meter Looks very similar how mine would have to be set up. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. 73 Dana 60. Target AFR from Wizard is 12. and 300 RPM for manual transmissions. Holley is introducing new Sniper EFI accessories as fast as they can. Air/Fuel Ratio (AFR) tuning is a form of engine tuning based on the weight of air and the weight of fuel. The Holley throttle body has a 800 cfm rating, and has injectors rated for up to, I believe, 650 HP, normally aspirated, or as low as 200 HP. 2021: Author: rumaneri. Then add 300 shot to it. The Super Sniper is designed to be a perfect and more finely tunable replacement for a blow or draw through carb setup on boosted engines. Wanted to see if anyone is running a Holley Terminator EFI or Sniper EFI setup on a high RPM (up to 7500) NA 347 or 363 with carb intake manifold and what your experience with the system has been. Backfire hp tuners This can be downloaded on the Holley Tech Resources webpage, in the Sniper EFI section. Despite the over-the-top nitrous system, there’s no separate nitrous controller—everything is run on a single Holley Dominator ECU. bari. 6 AFR (Air Fuel Ratio). FiTech is NOT a part of Holley. AFR Control. I was wondering if anyone else running the sniper can comment with some of your settings or what works and what didn't. 3 AFR is a little rich. Holley carburetors operate at a range of 5. Holley Sniper 550-870 - Holley Sniper EFI Stealth 4150 Fuel Injection Systems Fuel Injection System, Stealth, 4150 Flange, Polished, up to 650 hp, 870 cfm, Four 100 lbs. The Holley Sniper Stealth 4500 EFI is the ultimate self-tuning throttle body EFI system!! Designed for use in drag racing or aggressive Pro-Street cars, the Sniper Stealth system can handle from 800 to 1500 horsepower! Location: England. I have 1Sec and 400 RPM, but your settings may be different. 10. Hi there, Finally got my Chevelle out of the garage with the new engine this morning. 030" over, I'm running Trick Flow heads & Stage 2 CAM, MSD Billet Distributor and MSD-6AL box with an air-gap intake. North Georgia. Once above 160 degrees, turn the idle speed screw so that the idle is about 50 RPM below your target idle speed This Holley sniper is brand new, including new tank/lines/ in tank pump ect. Yep, the Sniper is officially off my list, dammit. Views: 41414: Published: 7. About Cfm Carb 800 Re: First Holley Sniper failed. So, it is good for a wide range of engines. § Cruise Air/Fuel Ratio – Typically between 13. 0 Acceleration enrichment 29. Can trigger CD box of Sniper EFI coil driver module. Read the Instructions, Check Your Wiring, Double-Check Your Ground, Triple-Check Your Ignition, Inspect Your O2 Sensor, Fuel Pump Location, Hard Starting Issues, Sniper EFI Holley Performance highly recommends the following items be checked and/or corrected prior to installation of your new Sniper EFI system to ensure optimum performance from your engine. Handheld shows AFR bouncing around the target. you have a 59A--make sure the advance is working on this, where the cam pivots on the shaft. If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! Featured Products. RPM going up and down , miss firing and backfiring. Last year, just a few months after finishing my install of the high performance engine I'd had built, my '81 Bronco was rear ended and totaled. 1 4150 Sniper EFI (550-510 Shiny, 550-511 Black, & 550-516 Gold) Top 10 Holley Sniper EFI Tech Tips, Holley Technical Training Manager's top ten "suggestions" for Holley Sniper EFI System installation issues. 1:1 AFR, or Lambda = 0 The Holley system probably starts up richer than the required stoichiometry 14. The setup wizard offers three cam choices for Stock / Mild ( 14+ In/HG vacuum ), Street / Strip ( 8-13 In/HG vacuum ), and Race ( 7 or less In/HG vacuum ) More aggressive camshaft grinds will likely require laptop tuning with the aid of the Sniper Software in general engines Hi all, ive recently installed and driven my sniper for the first time on the weekend. Holley Sniper EFI on Amazon: 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL Changing settings is easy, just use the touchscreen. 5 and 15. Search: Ls Self Tuning Ecu. Holley approached the design process of the Sniper 4500 from the very start to make it easy to install. Car runs perfect * Always begin with the fuel manufacturer's stated stoichiometric air/fuel ratio for their gasoline as your base target AFR and then set your power-enrichment WOT commanded AFR from there. Are you trying to find Multiconductor Tail on sale? Looking for Tractor Engine or other relevant items? This web site showcases a wide mixture of Multiconductor Tail, together with listings such as Tractor Part, John Deere, Tractor, Massey Ferguson, and much more. I simply can't justify the expense to only have that finely atomized and afr dialed-in mixture squirt right on a friggin throttle plate. I have installed other versions of the Holley Sniper systems and they have worked really well. Any one try a Holley sniper 4500 on a car with less then 800 hp yet? I have a 458w that makes 740 & 7000rpm hp on pump gas. I bought a new holley sniper , dual sync dist. I hope to get a bit more clearance by changing air cleaner/ filter parts. Builds 1985 FJ60 Gets a Holley Sniper EFI Setup Thread 13. Location: England. AFR GAUGE DISPLAY. Introducing the Holley High-Horsepower Super Sniper 4150 EFI. Is there anything else I can check/settings etc why it’s using more gas. Setting up Holley I reprogramed the Sniper several times. 600 lift, 107 LSA IAC COUNTS @ IDLE 7-8 TIMING CONTROL: Y/N? NO. Discussion Starter · #1 · Jan 7, 2019. You have benefited from the Holley Sniper setup having all that preprogrammed for you. Holley Sniper 838232 - Holley Sniper EFI Fabricated Race Series Intake Manifolds Intake Manifold, Fabricated, Aluminum, Black Anodized, Chevrolet, LS3/L92, Each Part Number: SNE-838232. Sniper EFI software was designed to make navigation simple and easy. Settings: Hyperspark ignition setting, 57. Just completed a little project on my stock 72 MGB 1800. Try setting the idle to 750 (you will have to adjust the Holley Sniper Tuning I did notice that the AFR dropped from 13. That way, you too can see the progress and find out whether Holley’s Sniper EFI is for you. This has been rectified in the newest iteration of the line. So far, if you’re Example; If the engine begins to idle poorly and stumble at 14:1, we will set the target just below that at 13. FUEL SYNC Holley sniper efi Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Views: 39794: Published: 22. The 1,250hp capability is for forced Wanted to see if anyone is running a Holley Terminator EFI or Sniper EFI setup on a high RPM (up to 7500) NA 347 or 363 with carb intake manifold and what your experience with the system has been. 6 roller rockers, air gap intake and it dynoe'd at 452hp, 462ftlbs. Raeford, NC. 258 Holley Sniper EFI & Hyperspark. Obviously your manifold is too tall. 050") solid roller, AFR 210s, 550 crank HP @ 6500. Something like this can show long-term benefits, so I plan to give you guys a future update as things progress. Black Betty: 1969 Charger R/T - X9 440 six pack, TKO600 5 speed, 3. Page 54: Iac Rampdown NOTE: Contact Holley Tech Support if you have any questions regarding IAC settings. Once it was, I adjusted the Idle AFR to 14. 0msec). Tried to run it on 2 separate occasions. 302Ford/350Hp Roller cam & Holley sniper fuel injection Ran great 800 326 6554 54. I was already holding my nose being that it's still a wet manifold but that's just a bridge too far. 8. Ls Ecu Self Tuning . The Jeep system was the one they make specifically to replace the BBD carbs. May God's grace bless you in the Lord Jesus Christ. Observing the temperature on the 3. Let's take a look at the items that would need to changed or can handle the higher pressure. 1968 Camaro, 383 with Dart Pro 1 aluminum heads and roller cam, Holley Sniper EFI with Dual Sync distributor, Tremec TKO600 5-speed transmission, 3. Holley sniper stalling at idle. My block is . It fits any 4-bbl intake manifold and is. Car drives beautifully except for a few things. Set your target afr’s and target timing and the holley software does the rest. Backfire hp tuners Multiconductor Tail. And you wont have to take it somewhere to get tuned. Almost seems like it needs a spring to make it harder to push on the gas. I recently installed the Holley Sniper on my SBF 302 in my 1980 Mercury Capri. I got my tank, 255 LPH pump, straps, vent/rollover valve and sending shipped to my door for $540. « Reply #2 on: September 28, 2021, 08:15:30 PM ». Welcome to Fuel Moto USA! EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. The ECU in the Holley SNIPER EFI can control your vehicle’s ignition system with a couple of quick modifications to the distributor. ccn. I have blue Holleys. With A To How Vacuum Tune Gauge Quadrajet . N. The AFR stays stuck at 35. With those settings, I am averaging over 25 mpg. I could use a carb but wanted better street ability for cruising. Found out that it was due to rfi/emi. madmike wrote: Well I must of done something right,,, free carb, about $300 for the intake. Sniper EFI throttle bodies require 58-60 psi of fuel pressure and a 10 micron filter. Detailed instructions of each icon are contained in this manual. Hi, I'm having problems with my Sniper. Top 10 Holley Sniper EFI Tech Tips, Holley Technical Training Manager's top ten "suggestions" for Holley Sniper EFI System installation issues. Holley Performance highly recommends the following items be checked and/or corrected prior to installation of your new Sniper EFI system to ensure optimum performance from your engine. It was designed for early mustangs and straight six powered Fords. Click to expand Try opening the idle screw a bit to get the RPMs up. 5:1. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. Add the base "rich" mixture to your input parameter for displacement as 420 in^3, and your almost 2 times the mass of fuel for the air than the 2f is sucking in Guru's (@FJ60Cam @wngrog @GA Architect and others!), I'm trying to resolve a couple slight annoyances that I'm having with my Sniper. I had to make adapters to go from the In the Holley forum many speak about a problem with the afr reading. ristopizza. Bbc Headers - mediabobbio. If ignition is turned on and the engine is not started, after a HOLLEY SETUP USED: 600 HP Sniper in shinny finish ENGINE VACUUM: 8-9" CAM SETTING (Stock/Mild | Street/Strip | Race) AND YOUR CAM SPECS: Street/Strip. '92 Ford Mustang GT: 385" SBF, Dart SHP 8. 5 psi of fuel pressure and use a 40 micron filter. I read in this forum that there seems to be a problem with the Sniper in that sense. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. 5 on RPM issues but don't know if this was the cause or an effect. A new WBO2 Sensor doesn't help. It runs fine but is down on power compared to the 750 eddy that was on it, I know the 750 was too small, so this holley set up should have been better. Ive installed a bunch on customer cars and they just work. Just had the Holley Sniper installed on my 78 Z28, 383, 5 Speed TKO and the drivability stinks. Most tuning parameters and software functions can be found by selecting an icon from the toolbar. However the Sniper does not have that parameter in the advanced tables or in the data log parameters. For starters, your fuel system will need to be upgraded. The Sniper EFI system uses these readings to analyze ‘real time’ running conditions. 0 Target AFR at cruise 14. 6. For startup, Every once in a while ill have a combo that fires up super easy on cold start but is a little sluggish on hot start. 28 mpg and goes fast too. 54. It should go to 12:1 AFR when the O2 isn't in the loop, not over the top pig rich as it did. Does that sound right for the vacuum I am pulling based on your comment above or should I switch it to #3? Discussion Starter · #40 · Dec 16, 2016. google. The options with a Holley ECU are nearly unlimited and the fine tuning capability is awesome. At 10. It needs the tip pointed down at least 10 degrees from horizontal and at least 15 degrees from vertical I prefer about a 45 degree angle from horizontal. 477 Posts. The AEM CD-5 & CD-7 dash displays connect in between the Holley Sniper handheld controller and the Sniper EFI unit via the AEM P/N 30-2221 CD Dash to Holley 4P CAN adaptor harness. With my Holley HP ecu I was able to build a 2D table using BARO(barometer) parameter and alter timing, fuel, cranking fuel, etc. Visit site. 680 Vacuum secondary Quick fuel Holley Draw threw turbo. Idle Tuning is a very important part of tuning any EFI system, especially our self-learning units like Sniper or Terminator X EFI. Loosen the distributor hold AFR stands for air to fuel ratio. TOOLS REQUIRED FOR INSTALLATION Holley Super Sniper HP EFI Install: Advanced Features May 11, 2018 Mike Aguilar Fuel Delivery , Galleries , How-To and Tech Tips , News , Slideshow 2 Click Here to Begin Slideshow Not long ago, I introduced you to Holley’s Sniper EFI 4150 Super Sniper EFI, a TBI-style fuel injection system that can support up to a whopping 1250 HP. The big-block is backed by a TH400 two-speed custom-built by TCS Products. 1 at idle, 14. For the ease and cost id go holley sniper all day. Smells rich and plugs are black & sooty. And The BOSCH #17025 is what fits the Holley Sniper. The price point and performance of the Atomic is similar. I went with the Holley Sniper EFI with the Hyperspark distributor and control box and coil along with the intake fuel pump and gauge, so I can have the computer control fuel and ignition. Here's the proper way to handle this basic task. again in this video it was not running lean but still struggled to idle initially. That's mass of air/mass fuel (AFR). Many times a carburetor is looked at as the prime culprit or the main cause for a myriad of other engine-related difficulties that The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. p-strip--image {background-position: 75% 25%;} . As far as fuel, I'd also go with simple, vs table, and put idle at 14. Tonight I found the #2 spark plug wire laying on the header. IAC is zero during that Hi there, Finally got my Chevelle out of the garage with the new engine this morning. 35. Current Settings Target AFR at idle 13. CD box of Sniper EFI coil driver module. About Quadrajet Tune How Gauge To Vacuum With A Views: 39794: Published: 22. when I get time to get to my unit I will try to verify what pressure is. 38 Posts. The 550-849K , 550-850K, and 550-851K fuel injection systems include the complete fuel system. . Re: 1963 Ford Galaxie 390FE with Holley Sniper EFI. Holley Sniper 550-513 - Holley Sniper EFI 1250 HP Super Sniper Fuel Injection Systems Fuel Injection System, Holley Super Sniper 1250 HP, 4150 Flange, Self-Tuning, Black Throttle Body, Kit Part Number: SNE-550-513 Holley Sniper 838232 - Holley Sniper EFI Fabricated Race Series Intake Manifolds Intake Manifold, Fabricated, Aluminum, Black Anodized, Chevrolet, LS3/L92, Each Part Number: SNE-838232. Holley Sniper or Edelbrock Pro Flo 4? The Sniper is the economy way to add EFI, the Proflow is a higher end EFI kit. 0 to 12. I broke in the cam on the new engine (SBC 400) with the sniper and dual sync, also with really no issues. ms. Intrigued by the Sniper for a very simple setup I have (my fan's self controlled, no auto trans to worry about, etc. Fuel doesn't burn on its own. We hosted a fireside chat with Hanif Joshaghani, Co-founder and CEO of We held a virtual Fireside Chat with Irv Henderson, from U. Start with a high-flow air cleaner and Street Performance mufflers and I returned this tuner. The data obtained by the ECU is then used trim fuel flow to achieve the targeted air fuel ratio (AFR). Background Label - Contains AFR values ranging from 10:1 to 16:1. com. U think those would work I am actually just running the Mercruiser cool fuel setup with factory 7. But it does reduce your ability to cool the engine under normal riding conditions by changing the AFR. (830) 606-8513. Read the Instructions, Check Your Wiring, Double-Check Your Ground, Triple-Check Your Ignition, Inspect Your O2 Sensor, Fuel Pump Location, Hard Starting Issues, Sniper EFI Sniper EFI is recommended, fuel pressure needs to be between 55-65 PSI. 9 at WOT. This section will need to be discussed in two parts. 7:1 AFR (or just 14. Using the supplied filters and the 3/8 hoses I rigged up a temp setup. Green Chile. 5 idle, 13. 1 4150 Sniper EFI (550-510 Shiny, 550-511 Black, & 550-516 Gold) TARGET AFR: Allows changes to the Target Air/Fuel ratio at idle, cruise, and wide open throttle. Holley just came out with their new 1100 Sniper 1 barrel fuel injection. For example, a 14. Rotate the engine and mark the crank at 15 degrees Before Top Dead Center (BTDC). 703 Posts. 5:1 Once the engine is relatively warm (over 160 degrees), you can start tuning the Fuel VE table to dial in the idle air/fuel ratio (AFR). Switch power to the Sniper on and crank the engine. Sniper data logs - Google Drive. Messages. it: Computer Ls Tuning . 0 Target AFR at WOT 12. EFI Conversion Suitable for Power Adders & Nitrous. #28 · Aug 15, 2018. Now i am at the same point, using the "Email A Technician" function at the Holley site a month ago, no reaction. Even Holley said either their tank or Tanks would work just fine. 8 or so. The O2 Sensor looks good. The problem is quite not as bad with my timing set at 15* idle, 36* cruise, 34* WOT. there were some crap plastic ones available, but I went ahead and got this nice machined alloy one from Holley. jpg. Bryan's Camaro Save Share Just Friday after the car/engine had been running great for months, it started having crazy AFR numbers, hesitation, stalling, popping, and being almost un-d Just as the Sniper / Terminator X setup wizard uses a Simple idle/cruise/WOT method of setting ignition timing it also uses the same simple method of setting the Target AFR. Heated intake from Ron Lummus. 4 minutes ago. it Bbc Headers I recently installed the Holley Sniper on my SBF 302 in my 1980 Mercury Capri. Sniper is Holleys offering into the roughly $1,000 bolt on TBI EFI. May be a black, white or light gray label. Discussion Starter · #40 · Dec 16, 2016. With closed loop its flooding the engine. The Holley system architecture is similar to the 1970's early EFI systems out of Detroit that used throttle body style injectors. 5. Pure Highway @ 65 is over 27mpg. “The Sniper 4500 is designed to be a direct bolt-on replacement for most 4500 carburetors. The Hollry Sniper system is a throttle body speed density system that starts around $1400 for the base Holley kit and depending on the kit can creep up to $1,800 or more. She was happy and had no temp issues of lack of power in Lean Cruise, so I upped the AFR to 15. By: Sniper EFI | 01/20/2020 < Back to Motor Life Home. Atomic EFI is part of the MSD brand which Holley took over in 2015. it: 632 Engine Ci . About Ecu Self Tuning Ls This can be downloaded on the Holley Tech Resources webpage, in the Sniper EFI section. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. Jan 08, 2016 · The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. Once engine is started and closed loop is active, the AFR should read close to the Target AFR in the handheld readouts. I've ran the Sniper EFI system with the Holley dual sync on my old engine (SBC 350) with no issues. The stoichiometric point is the AFR where all of the oxygen in the air burns with all of the fuel. I also put in new plugs and wires. #1. The Holley Sniper Stealth 4500 EFI is the ultimate self-tuning throttle body EFI system!! Designed for use in drag racing or aggressive Pro-Street cars, the Sniper Stealth system can handle from 800 to 1500 horsepower! The Sniper is the same hight as a Holley carburetor so you can't blame it. These are used to determine your current operating AFR and also your mode settings. Multiconductor Tail. Fired right up, as soon as it hit 160 degrees started learning, and AFR is identical between the two banks. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. It was about $40 - $50 cheaper than the Holley Sniper fuel tank and looked to be the same thing. , coil, and holley in tank fuel pump, When engine got hot it would go crazy. No dynos anywhere close so I don't know wheel hp, link has estimated 619 @ 39. Direct plug in and even has a longer harness. Posted: Wed Oct 20, 2021 12:39 am Post subject: Re: Holley Sniper Conversions. 7) means the mixture is 14. 13. Adjusting the acceleration enrichment settings on my Holley Sniper EFI on my 1990 Third gen Chevy Camaro with Flowmaster exhaust. in place of my 950HP holley carb. May be How to tune in A/F value’s Fine tuning Air fuel Value's for Gasoline Engines. I also purchase the HyperSpark ignition box and distributor to go with it. 623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Holley Dominator MPFI & DIS, 36-1 crank trigger, 1x cam sync, 200A 3G alternator, Optima Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal dual AFR (Oxygen Sensor) – Initially should show “Heating”. Bryan's Camaro Save Share Just Friday after the car/engine had been running great for months, it started having crazy AFR numbers, hesitation, stalling, popping, and being almost un-d Holley sniper efi Holley has done a great job getting these snipers to work outside of the base afr and timing settings. Just started up Sniper on my 400 SBC. 1,383 Posts. 1973 FJ 40, Setting up Holley Sniper 2300. 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL Read this manual before using this product. I put one on a chevy 383 stroker with about 500hp and another Sniper system in 79 Jeep CJ7. I had a feeling all the extra wires were picking up noise, but the O2 reading full lean in failure mode is very, very problematic. Followed the process per the manual. I really like my Tanks Inc tank. 68FordMustang said: Hi all, Build: 408w, large cam, Holley Super Sniper, Hyperspark Distributor, MSD digital 6al (pn 6425), dual fuel pumps (58psi), battery located in trunk. SASYAMX said: We was wanting to use the 4500 sniper to control timing and for the nitrous progressive, if can not do the timing of individual cylinder, I think it might be better to buy a custom carb and use a Holley dominator ecu to control everything and we can up grade later. 5AFR the AFR guage kept jumping into the red when giving it some gas (20-28) and the engine would sometimes stall out. drive. torino. Everything is “within the reasonable AFR targets” IAC is at 6-7. 199r 8446 holley contender manifold for small block, edelbrock intake manifold ports on sb 78 chevy yahoo, small block chevy intake manifold ebay, amazon com aluminum block manifold, edelbrock 2101 performer intake manifold, sniper sheet metal fabricated intake manifold small block, question on vacuum This is intended for Holley Sniper, Terminator, Terminator-X, HP, and Dominator users who need some training and understanding of the Holley software. The Super Sniper EFI Self-Tuning Kits from Holley feature all the benefits of EFI for a carbureted engine and are a perfect option for street cars, race cars off-road vehicles or anything running high horse-power, forced induction or nitrous. A MagnaFuel 750 fuel pump supplies fuel to Holley injectors and an Accufab 105mm throttle-body. I have already written twice without receiving an answer. 9L / 300 - Holley Sniper EFI install - Hi all, So, I finally got my engine installed into my new Bronco. 7 it no longer does this. 5-inch handheld (only), wait for the temperature to achieve 160 degrees F. Staff is available 24 hours/day, 7 days/week. 5 AFR I am starting to get somewhere. 2021: Author: kigokisu. o Holley Dual Sync – For Holley EFI Dual Sync Distributors Follow installation and setup instructions included with distributor for install, uses reference angle of 50 Configures Ignition Output as Points Out (dwell = 2. With the MSD, you need an adjustable rotor to properly phase the rotor to the cap terminals. Would this set up work on a engine producing around. 23 8 3/4 high school sweetheart. They had to significantly cut capability and quality to reach the target price point. The area of this AFR table that shows the cruising area of the map (3000 rpm row, columns 50 to 90 kPa) show slightly leaner than stoichiometric AFR. holley sniper afr settings

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