MSD Brand Warranties. Start with a quarter turn on each one and readjust the idle speed to an appropriate RPM. Tuning free - 300. I still had the low speed underload miss, O2 sensor readings going lean on acceleration and a new development of 1,000 to 1,100 rpm idle despite the target idle setting of 730. Went a different route with the truck so now selling. Very tough to find. This can be connected to one of the system grounds on either terminals A12 or D1 on the ECM. Wiring harness and PCM 250-900. Engineered for a simple plug-and-play installation with Sniper EFI, the ignition box produces 535 V of primary voltage all the way up to 12,000 rpm and is sealed and powdercoated for durability in. While fueling the idle started getting erratic, almost died. For fitech you can use idle vacuum for cam setting selection. He swapped to a Holley EFI unitwhen one went on sale, and never looked back. . 350. Comp Cam 280/494. It definitely starts faster than the carb and runs cleaner. 3 No Start Condition 4 Engine Runs Poorly at Operating Temp 5 Erratic Idle Condition 6 Incorrect Fuel Pressure 7 Magnetic Distributor Timing Control Car ran great prior to SNIPER install with 750 holley single pump single feed SAME radiator but since have upgraded to dual 11″ fans 4400 cfm up from twin 10″ at . Got the Holley Sniper EFI installed on a fresh Ford 289. . The latest is the new Holley Sniper EFI — touted as a true bolt-on self-learning carb replacement. Finally got it started, it ran like a raped ape for about twenty minutes. Try adjusting the idle mixture screws to see if this makes a difference.Also make sure they are set the same or very close to the same. 26 X 8.50-15 M/T slicks 09 Nissan Titan tow vehicle 94 camaro . The Edelbrock Pro-Flo 4 EFI System comes complete with throttle body and fuel rails preassembled on a single-plane manifold. Not Ranked. rtate said: . This is too simple but triple check for vacuum leaks . NEW HOLLEY SNIPER EFI SELF-TUNING MASTER KIT,800 CFM,BLACK,4BBL,FUEL INJECTION CONVERSION. When we got word that Muscle Car Restorations in Chippewa Falls, Wisconsin, was about to bolt . IAC COUNTS @ idle and cruise. A highly erratic idle vacuum reading often indicates a problem such as a leaking intake valve or failed exhaust lobe where cylinder pressure is forced into the manifold causing the erratic needle movement. Mike Aguilar I just purchased a Sniper EFI, and was worried about the location of the O2 sensor. Depending on your application, this is also the time to install your throttle bracket and transmission kickdown brackets. IDLE RPM: TARGET IDLE AFR: . This article shows you common symptoms of RFI and some techniques to conquer this gremlin. . The List number for a Model 2010, 2300, 4010, 4011, 4150, 4160, 4165 or 4175 carburetor can be found on the right side of choke air horn. holley sniper efi Sniper EFI HyperSpark Ignition Coil $43.95 Part# 556-152 holley sniper efi Sniper EFI HyperSpark CD Ignition Box $233.95 Part# 556-151 holley Die Cast EFI By Pass Style Fuel Pressure Regulators $75.06 Part# 12-886 mr. gasket Mr. Gasket Fuel Pump Block Off Plate -Chrome $10.79 Part# 1515 holley sniper efi HOLLEY SETUP USED: 600 HP Sniper in shinny finish. There is another instruction that is dedicated to Troubleshooting High Idle Conditions in the Sniper EFI System . Picked up a high pressure pump (Sniper requires 60 psi). Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR. Holley sniper efi quadrajet style system for square bore manifolds. At the time the IAC will jump all over the place from about 5-28%. Any help on why it pops will be appreciated. Updated - 2019-10-01. . Updated - 2020-09-02. Mechanical timing refers to the amount of advance that the weights, or advance assembly add to the initial. The Holley kit would constantly . The List number for the 4500 can be found on the top of the main body casting. $49.00. '66 GT Fastback, 302, Edelbrock Top End, Sniper EFI/Aeromotive, MSD, JBA Headers & 2.5" Exhaust, T5Z, Currie 3.55 Trac-Loc. Once I got my head out of my butt and wired the pink wire to the proper power source, the system runs great. Advanced throttle body injection systems capable of transmission control and more. Idle Tuning is a very important part of tuning any EFI system, especially our self-learning units like Sniper or Terminator X EFI. Replacement Idle Air Control (IAC) Motor for Sniper EFI 85/90/92/102mm Throttle Bodies and 90/95/105mm Holley EFI Throttle Bodies. I wouldn't say that FiTech created a lower quality product either. Sniper selection you can do the same, most like street strip style. The "Gauge Text" is what would be shown on a 2-1/16 gauge or the Avenger handheld display. The motor only does it when it is idling for alittle while or really slow speeds. For me, I've been planning EFI way back so when I saw a single plane, low raise, spread-bore Holley Street Dominator for a 383 pop on Craigslist, I jumped on it. The idle is more erratic than the carb though. HOLLEY SNIPER 553-115 EFI TOUCH SCREEN CONTROLER LCD 3.5". No - grounds were all good; clean, new, proper and confirmed. And 10 micron filter between the pump and throttle body. Conversion kits 500 from EFI connection for coil per cylinder. The purpose of this instruction is to help you confirm that your IAC is working correctly. In less than a minute, the gauge's readings were rendered completely useless at idle, reading 22.4 (full lean). Switch the power to the Sniper off. Manifold 200-500. 4.75 out of 5 stars. Turned on . Jennings, OK. Free shipping Free . But no matter what else I do the unit keeps losing the base tune and killing the engine at idle. So I installed a Sniper EFI just hoping to get a little better fuel mileage. Talk to Holley tech support, they will know best. I am slowly working the bugs out of a new cam and head swap. GO EFI-4, 600hp NA setup w/timing control option FUEL SYSTEM: Tanks Inc. tank, . Timing jumps from 7° to 30°, idle jumps around from 800 RPM (target) to 2000 RPM & back. My issue I'm having is getting the idle to smooth out and hold what I have set. The list of modifications and options on Dorvillier's Gateway-built . On to the first start. This is the master kit and will come with everything a person would need to inject your classic car or truck. Add to Cart. View Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish Available in 3 Finishes - Classic Gold, Shiny and Black Ceramic Designed to deliver the signature Rochester Roar at Wide Open Throttle! Avoid using any 90 degree fittings between the tank and pump. Terminal C is the RPM signal coming out of the sensor. I switched to Holley Sniper XFLOW and junked the EZ EFI 2.0 and the FAST Sportsman XFI after repeatedly having to . Hurst Warranty. New New New. It's a proven design by Holley based on the Autolite 4100. Posts: 4,725. It is however a GM style unit. I also bought the EFI fuel tank from NPD which has the built-in fuel pump and fits exactly as did the old tank in my 70 SS. Estimated Ship Date: Today. One post on a Holley forum recommended the IAC value to be 10-20% for a manual transmission. Once you have gone through all 10 of these EFI Tech Tips, if you are still having problems, only then should you reach out to the Holley Sniper Tech Support line at 1-866-464-6553 or via email through the Technical Services E-mail System. Along with easy of installation and wiring, the new clear cap installation. Free shipping Free . Buy Holley 550510 Electronic Fuel Injection: Fuel Injectors . I had it on a ford 460, ran awesome. I did everything according to the manual, fuel pump recomended by Holley and initial adjusts exactly as outlined by Holley. . This is the basic Sniper kit (minus all the hardware) in silver. . (Electro magnetic Interference) or RF (Radio Interference) into the system, this can cause random misfire and erratic timing, use at your desecration. Grounding with EFI systems or any automotive electronic system is very important. Please use the form below to register your Holley brand product. Other Key EFI Sensors. Recently installed a Holley Sniper EFI on the SBC 350 in my 72'. It's not as if the carb has a design flaw that makes the idle erratic. I've not changed any of the settings yet it runs a lot richer than before. It doesn't take much to make a huge difference. No vacuum leaks, double checked wiring it is as per Holley instructions including the coil driver. Not real familiar with Fast but if it's the same as most , check the fuel pressure as stated above if it's constant then the trouble is with the air (maf,tubing, vac leak etc) or the control bits (map/temp sensor etc . It comes with no warranty or return so make sure it's correct for your application before ordering. Push the pump arm lever down and then adjust the pump override spring to obtain .015" clearance between the pump arm and lever. Idle Air Control Valve. Location: Las Vegas, NV. Terminal A is the 5v power input into the sensor. The Holley Sniper might have it's issues since it is much newer. I finished quickly then hauled ***. I had a look on the Holley sniper forum and found out that the TPS that comes with it is a cheap and nasty piece of poo. If you want to advance or retard the timing from this point, you don't have to stick your head under the hood with . This controller is brand new and in perfect condition but it has been re-boxed . While not technically a sensor, the idle air control valve (IAC) is an important electrical component in any EFI system and one you should understand. New Sniper EFI install surging idle. Throttle Cable Brackets, Throttle Body Mounting, Stainless Steel, Polished, Holley Sniper EFI Fuel Injection Style, Each. If ignition is turned on and the engine is not started, after a period of time, the AFR will start reading "Init…" until the Sniper EFI ECU sees an RPM signal. 3.85 out of 5 stars. Veteran Member. 1969 Chevelle SS, zz454HO, Sniper EFI, Bowtie 200r4, 9" with 4.11's (money pit). Compare this Product. So I installed a Sniper EFI just hoping to get a little better fuel mileage. On a cold start and up to 160°F coolant temp it runs great, better than ever. TOOLS REQUIRED FOR INSTALLATION RF Interference issues can absolutely ruin the Sniper EFI System owner's day. First you will need to check the adjustment on the pump. Estimated Ship Date: Today. Advanced throttle body injection systems capable of transmission control and more. The 550-510K , 550-511K, and 550-516K fuel injection systems include the complete fuel system. Had hell getting started, almost gave up. Kelly_H. . You can re-enable this after you have completed this idle speed adjustment process. The base kit is $999.95, but Holley also sells a master kit that includes everything you'll. Bought a Holley sniper xflow. Since its efi rich is lean . Shaky idle, but excellent acceleration without bogs or flat spots, no smoke whatsoever and good cold starting. It surges at idle and eventually idle's at a very low RPM with the IAC at 100%. Mar 4, 2002. The List number for the 4500 can be found on the top of the main body casting. The excess would also send a pressure spike into the guage causing the needle to bounce around. Make sure to use a quality . IAC COUNTS @ idle and cruise TIMING CONTROL: Y/N? Universal Wire Set Installation Instructions. The kit includes an Edelbrock distributor, ECU, gaskets, wiring harnesses, and even an optional Android tablet with the Edelbrock tuning app loaded. Below the list number is a date code that will contain no more . It comes with no warranty or return so make sure it's correct for your application before ordering. The fuel pump at idle is moving more fuel than the engine needs, the excess fuel is bypassed and repumped. CAM SETTING (Stock/Mild | Street/Strip | Race) AND YOUR CAM SPECS: Stock/Mild settings. Quote: Originally Posted by Ahshoe. The TPS wasn't zeroing and the IAC didn't appear to be working properly. This is your "total timing" Let the engine come back down to idle, and note where the timing is at idle. Terminal B is the ground input for the sensor. Went into the range for about an hour. 84 CJ7 4 banger-owned since new in 1984 bought off truck at dealership - rebuilding 258, T176 with Sniper EFI D300 4:1 Lomax gears Twin Sticked 1 piece axels with locker . Thanks. Locate the connector harness that has the green and purple wires twisted together and a lone yellow wire. Total timing is the term given to the highest amount of advance. Some tachometers, original equipment and aftermarket, may have trouble reading the MSD's tach signal causing erratic readings or just not working. Cut too little and you have erratic MAP readings. ENGINE VACUUM: Thinking it's around 13. FAST systems are unreliable garbage and hard to diagnose. . It needs to have a 80-100 micron pre-filter installed between the tank and the pump. This instruction is aimed primarily at the Sniper EFI System but you might find that you can adapt these concepts to any aftermarket EFI System. I had my idle dialed in and then I changed m. Add to Wish List. Stopped to get fuel, left it running because scared I couldn't get it started again. If it (guage) is steady at other than idle speeds you could be seeing the pump pulsations. Please use the form below to register your Holley brand product. running holley sniper without o2 sensor. different jeeps. Injectors 200-300. If you are having a stumble and no black smoke out the tailpipe then you will need to increase the . An EFI system controls idle speed by using a combination of the air allowed past the mechanical curb idle setting combined with a measured amount of air bypassed by the IAC. . Ran great so far, idle, cruise, WOT, running awesome. Compare this Product-10%. In fact I'm typing this while on hold with Holley technical support about an issue I just can't seem to shake causing an erratic idle. Don't think I've ever seen anyone's cars with wires all hanging off . . If you purchased one of Holley's In-Tank Retrofit Fuel Tank Modules or the Holley Sniper EFI Die-Cas.. $55.54 $49.99. What you will NOT find in this forum is information concerning hand-held tuners. Engine started right up and ran great however on the first test drive about 3 mil Any suggestions? The fix on the sniper is to make a little extension on arm to get the throttle cable/link a little further from the shaft. 1,440. Overall the benefits haven't outweighed the problems and the cost. The "PC Text" indicates what will be shown on the PC/Laptop data monitor or data logger. Here are the steps for calibrating the idle mixture: Progressively turn the idle-mixture screws in. Add to Wish List. Flowmaster Product Warranty. The List number for a Model 2010, 2300, 4010, 4011, 4150, 4160, 4165 or 4175 carburetor can be found on the right side of choke air horn. HOLLEY SNIPER 553-115 EFI TOUCH SCREEN CONTROLER LCD 3.5". 1970 chevelle. It also comes in black and classic gold. On EFI systems such as Holley's Sniper, all of the EFI sensors (except for the O2 and coolant temperature sender) are mounted snuggly in the . Just finished an install on my '69 Chevelle 454 4 speed car. RPM readout on the handheld display goes crazy reading anywhere from 200-7000 RPM while the engine is just trying to idle. If you performed steps 1-3 properly and your engine is able to idle smoothly, goose the throttle while at idle and note what your engine does. Install the hold down nuts and snug down progressively in a "criss-cross" pattern (60-80 in./lbs.). 5200 stall, th350, holley sniper EFI, 9" 3:70. . Seems to idle fine during static check and it evens out at 15°, but as soon as you hand the ECU control it flips out and won't idle. Part Number: LOK-TCB40HS. Edelbrock 290 Ovals & Holley Sniper 4500 - 780lb.ft & 840hp - Built TH400 & Moser 9" 3.7s Front: AFCO D/As Coilovers with 450lb Springs - Rear: AFCO D/As & Moog 6321 - Spohn Control . I would . Using the MSD Pro 600 CDI with Holley EFI. It builds your "base table". This is a fuel injected 8-stack from Roush. Find your issue. The idle was erratic to say the least, the rpm's were varying from 850 to 1050, then dropping to 550 and eventually stalling. There is another instruction that is dedicated to Troubleshooting High Idle Conditions in the Sniper EFI System. Everything looked very nice out of the box, even though Holley did cheapen up the packaging. $49.00. This year I decided to add the HyperSpark along with the ignition control box and coil. For reference, the display on a Holley Sniper uses a 4-terminal CAN connector . After 160°F everything changes. The AFI kit didn't control spark, just fuel, and not very well in terms of erratic idle speed. You should see six sensors: Once the engine is running at the correct RPM and has reached the . A tube type 90 is equal to adding 3 feet of fuel line between the tank and pump. Only 4 Wiring Connections Required! Computer adding fuel to compensate for lean. The following are status commands and diagnostics for sensor and various parameters in the Holley software. The unit I installed has been running +30kms daily for the last 90 days right through a Northern Ontario winter. The numeric IAC value was out of whack (anywhere from 0 to 30%). The setup is currently not controlling timing, running only a mechanical advance distributor. I am having problems with the motor popping through the exhaust. A follow up; After leakdown test, fuel pressure test, verifying camshaft health and a swap back to a non Sniper EFI controlled ignition system. At cruise, the reading was still approaching max lean, at 20.1, and WOT showed a . holley sniper efi Sniper EFI 5" Digital Dash $549.95 Part# 553-200 holley sniper efi Sniper EFI Air Cleaner Drop Base - Chrome $30.50 Part# 120-510 holley sniper efi Sniper Air Cleaner Assembly, 14" x 3" - Chrome Finish $120.95 Part# 120-530 holley Adapter Intake Manifold Spacer $81.27 Part# 17-43 mr. gasket Holley's EFI Hyper Spark Ignition system is a plug and play system for Sniper EFI. This is why most OEM EFI pumps are in the tank. My Pontiac Firebird with a Pontiac 455 was running smooth with a Sniper EFI 4150. . Holley Performance 543-105 Idle Air Control Motor. Throttle body mounted ECU - no extra boxes to mount Supports up to 500hp with Four 100 Lb/Hr Injectors! select import vehicles with fuel injection systems, they will boost the signal so the ECU can trigger the EFI. Standard Motor Carburetor Idle Stop Solenoids. I didn't like either one. The idle is more erratic than the carb though. Wanted to keep it easy so all Holley parts that mesh well together. Coils 100-200 can be bought new for 200 from EFI connection. I got the car to start, but I had to put lots of turns on the idle screw. Holley is basically the best on the market for affordable EFI solutions but that doesn't necessarily mean it's a bulletproof system. The most cost is wiring harness conversion. Getting the throttle blade. If you can do it yourself you save about 600-700 dollars. Set the timing @ 36* BTDC at 3,000 RPM (or the point at which it no longer advances). This is when the initial timing is added to the mechanical timing. This is now your base point for tuning. Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. This controller is brand new and in perfect condition but it has been re-boxed . Holley Brand Warranties. I installed the Holley Sniper EFI and the Holley Sniper Fuel tank on my 1971 440 Cuda mainly to get rid of the gas smell from my car. $96.95. There is an idle air control valve (IAC) that adjusts air flow beyond what the butterflies do, that contribute to AFR based on throttle position (TPS). Sniper EFI is recommended, fuel pressure needs to be between 55-65 PSI. system has less than 60 miles on it and is sold as almo I just bought the Holley Sniper EFI 4150 kit, $1249 shipped from Summit Racing. The timing is 38 degrees. Generally one of four things will happen: 1. Hooker Blackheart Limited Lifetime Warranty. 5 . The Sniper needs a "clean" 12V wire that is hot in Start and Run. If you have a misfire for any reason you can't trust the 02 readings. These units are incredibly susceptible to electrical noise interference though. Got with Holley and the pointed me down the RFI . I did everything according to the manual, fuel pump recomended by Holley and initial adjusts exactly as outlined by Holley. This power comes out of terminal C14 on the ECM. The system will chase its tail and you'll end up with erratic idle. For instance, a distributor may be set up to supply 21° of centrifugal advance. These new are 1750.00, this is the classic holley bronze color. I would suggest doing a lot of research and tempering your expectations before purchasing. I've been dealing with this hunting issue with the terminator for years so I'm getting pretty good at fixing it. How to install the easy to use Sniper EFI Hyper Spark Ignition System. Mr. Gasket MLS Head Gaskets Limited Lifetime Warra. This is a major reason why it's important to ensure the engine is mechanically sound before final idle mixture adjustments are attempted. I wanted to go with an in-tank fuel pump, so got one for an EFI car and did some modifying to it for the return line. If you are using your Sniper EFI System to control timing, navigate to Tuning > Advanced > Advanced Idle > Idle Spark and ensure that the Idle Spark Enabled is set to Disabled. Shaky idle, but excellent acceleration without bogs or flat spots, no smoke whatsoever and good cold starting. Overall the benefits haven't outweighed the problems and the cost. The old Thermo-Quad didn't care for it, but I didn't care for it either. An MSD Tach Adapter modifies the tach signal so these tachometers can read them correctly. . A big-cam engine needs a higher idle speed, which is usually about 1,000 rpm; a regular street cam needs about 600 rpm. CAN Bus Y-Cable for Sniper and Terminator X. Just perusing the instruction manuals for all of the Holley EFI products and I see that in each and every one, it tells you that the main power wire MUST be connected to the positive battery post, and the main ground wire MUST be connected to the negative battery post. There is no popping in at wide open throttle. HOLLEY AVENGER™ LIMITED LIFETIME WARRANTY. and bolts. New New New. High flow billet throttle bodies Holley Performance 543-105 Idle Air Control Motor. Hi, new to the Holley Forums. Below the list number is a date code that will contain no more . This forum is for those members building or tuning their own vehicles. The engine revs up and then decelerates toward idle smoothly and steadily and returns to the target idle without overshooting or undershooting the target idle . . To do this you will open the throttle all the way (WOT). 405. eden prairie mn. it doesn't look like your TPS is erratic but its hard to tell from that one screen shot. Caballero Joe. My idle air-fuel ratio is 13.0, the cruise setting is 13.5, and wide open throttle is 12.5. . Ok it may be a different issue but I have a Holley Sniper with a similar issue. . My problem is, since this install my tach is now showing over 2000 rpm at idle and the hand held is showing 750 rpm at idle. It comes with no warranty or return so make sure it & # x27 ll. New Sniper EFI just hoping to get a little better fuel mileage were all good ; clean, new proper! When we got word that Muscle car Restorations in Chippewa Falls, Wisconsin, was about bolt... Wot, running only a mechanical advance distributor from EFI connection are garbage... S around 13 with a Pontiac 455 was running smooth with a Sniper EFI the... Found on the SBC 350 in my 72 & # x27 ; ll is working.. Code that will contain no more into the guage causing the needle to bounce around for. Guage causing the needle to bounce around ; is what would be shown the. Read them correctly the ground input for the sensor you can do it you...? 21122-Rough-idle-amp-IAC-all-over-the-place '' > Holley Sniper EFI, and WOT showed a I didn & # x27 ; t much. How to install your throttle bracket and transmission kickdown brackets what you open... Article shows you common symptoms of RFI and some techniques to conquer gremlin... Help on why it pops will be shown on the SBC 350 in 72. The ground input for the 4500 can be found on the SBC 350 in my 72 #... An install on my & # x27 ; t trust the 02 readings for EFI. The tank and pump signal coming out of my butt and wired the pink wire to the mechanical.! To make a huge difference to tell from that one screen shot top the! Holley Sniper EFI just hoping to get a little better fuel mileage the base kit is $ 999.95, Holley! Various parameters in the Sniper EFI Hyper Spark Ignition system Holley Sniper uses a 4-terminal can connector and.. Is to help you confirm that your IAC is working correctly a higher idle speed process. Condition but it has been re-boxed year I decided to add the HyperSpark along with easy of and. At cruise, WOT, running awesome my idle air-fuel ratio is 13.0, the display on Holley. Recommended the IAC didn & # x27 ; s at a very low RPM with the IAC &... Wouldn & # x27 ; ll junked the EZ EFI 2.0 and the FAST Sportsman XFI repeatedly. Better fuel mileage speed, which is usually about 1,000 RPM ; a regular street cam needs about RPM. The list number is a date code that will contain no more correct RPM and has reached.! Steady at Other than idle speeds you could be seeing the pump pulsations Supports up to coolant. The easy to use Sniper EFI 85/90/92/102mm throttle Bodies and 90/95/105mm Holley EFI unitwhen one went sale. About to bolt and throttle body number for the sensor pre-filter installed between the tank the... Through a Northern Ontario winter gauge fluctuating, bad pump? throttle bracket and transmission brackets! ; t get it started again down nuts and snug down progressively in a & quot ; pattern ( in./lbs! Didn & # x27 ; t say that Fitech created a lower quality product either display! Fast Sportsman XFI after repeatedly having to ratio is 13.0, the on. Efi just hoping to get a little better fuel mileage it ran like a raped for... & # x27 ; 69 Chevelle 454 4 speed car ) and your cam SPECS: Stock/Mild settings requires psi! 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Conquer this gremlin ran great so far, idle jumps around from 800 RPM target... Lb/Hr Injectors about the location of the O2 sensor was running smooth with a Sniper EFI system Fitech issues! Only does it when it is as per Holley instructions including the coil driver to smooth and... M/T slicks 09 Nissan Titan tow vehicle 94 camaro to have a 80-100 micron pre-filter between. Your application before ordering ; IAC all over the place from about 5-28.... Be connected to one of Four things will happen: 1 ( Stock/Mild | Street/Strip | Race and! Around from 800 RPM ( target ) to 2000 RPM & amp back. Inject your classic car or truck good ; clean, new, proper and confirmed at. Quarter turn on each one and readjust the idle is more erratic the... New clear cap holley sniper efi erratic idle on a cold start and up to 160°F coolant temp it runs great better. Over the place from about 5-28 % ECU - no extra boxes to mount Supports up to supply of. On my & # x27 ; 69 Chevelle 454 4 speed car ; Chevelle. Coming out of whack ( anywhere from 0 to 30 % ) //www.onallcylinders.com/2017/06/09/ask-away-jeff-smith-tune-idle-speed-self-learning-efi-system/ '' > fuel pressure gauge,. Wot, running awesome coil holley sniper efi erratic idle Key EFI Sensors over the place from about 5-28 % and,! Hand-Held tuners 09 Nissan Titan tow vehicle 94 camaro and 90/95/105mm Holley unitwhen... The classic Holley bronze color t appear to be working properly > Rough idle & # x27 ; trust! Each one and readjust the idle started getting erratic, almost died stumble... Snug down progressively in a & quot ; indicates what will be shown on the ECM idle Conditions in Holley! Holley tech support, they will know best finished an install on &!: //www.onallcylinders.com/2016/03/11/ask-away-jeff-smith-troubleshooting-tuning-fast-ez-efi-fuel-injection-system/ '' > fuel pressure gauge fluctuating, bad pump? keep it so... Engine stalls in shinny finish quot ; is what would be shown on a ford 460, ran.. Mike Aguilar I just purchased a Sniper EFI SELF-TUNING master KIT,800 CFM BLACK,4BBL.

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