Now that were up and running lets go deeper and see what can be done to improve things. In the example below, the IAC Park Position is at 50 percent at normal operating temperatures. Super helpful and knowledgeable. Sometimes just moving a fitting or changing the length of a line is enough to confound the harmonic and make it go away. :-). These values have not effected start up at all (35 degrees in the garage this morning) and the transition to running temp is much (much) smoother. I would point out that one of the key benefits of buying your EFI system from EFI System Pro is that you get free assistance interpreting data logs and updating configuration files. We know that because the air-fuel ratio is pegged to the bottom of the graph from about 5 to almost 6 seconds. Holley EFI for Beginners // Where to Start // Sniper, Terminator X, HP/ DominatorHolley Efi Tutorials: https://youtube.com/playlist?list=PLN6EQoVPwAwHzmhEknk. If you turn the ignition off and back on, & crank it, it will start & die again. Wrong Sealants or Fuel Additives: Those that are not O2 sensor safe will kill your sensor. I Had a holley sniper on this car with no issues whatsover. Maybe I am missing something here. Regardless, this screw will eventually need to be adjusted. If it shows "Stall" instead of showing an RPM while you are cranking then you've lost your crank signal. Increase that to 15 to start. I can't find a good spot in the fuse block, I don't recommend this. Both of these are easily corrected. Capability Range: Professional . Alternatively, the regulator can be removed and then what was a return can now be used as another feed. 10-09-2018, 10:11 PM Installed my Sniper, went through the startup procedure. Just a single configuration change that can be done, with practice, in about 15 seconds using the handheld controller. Everyone raving about customer service is telling the truth! It appears to be in throttle body? Thanks for the kind words. and set 3.) Unfortunately, the tuning ease of a Holley also creates some tuning problems. There exists an engine speed above which the ECU assumes the engine is running as opposed to cranking. In my experience startup fuel tends to be too much. 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 . The strong exhaust smell during this time indicated a very rich condition. However, each engine is different. Hey Chris, I installed a Holley sniper on a small block 400, first start was great! Well, my friend, that is where good automotive troubleshooting techniques come into play. If I go that far I have the option of replacing the intake, again, your thoughts? Each time you key on the system longer than the four seconds or so that it takes to deliver the prime shot, a prime shot will be delivered. To be 100% honest I was having an issue prior and flooded it. ), I have the sniper efi system with the holley retro-fit in tank electric fuel pump. I have it disconnected to flush any debris out.Thank you. Hard starting cool but starts easy when hot. Just recently installed the Xflow and my AFR is reading is 15 no matter what I do, engine is running ridiculously rich but the AFR is not changing at all is this an ECU problem or is there some things I can try doing before I pull it off and send it back to holley? Several things to cover here. #1 I have a sniper 551-550, I dont understand how to took the brown wire (tach input). From what I read it should not be installed vertically? The only Holley EFI system that supports dual O2 sensors at this time is the Dominator ECU. Would appreciate your input. Full product line and accessories at excellent pricing. That should be adequate to get the engine running. The engine needs a certain amount of air during cranking in order to be able to start. So don't outsmart yourself here and think, "Base map only says I need 7 PPH of fuel." The intention is to draw your gaze to something that requires attention. No aftermarket EFI system should be without a way of confirming fuel pressure. Similarly the fuel pump should be grounded directly to the battery using a wire of at least as heavy a gauge wire as the blue fuel pump power wire from the Sniper. Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? Extending wires with too small of a wire gauge will also result in the same damage. Icle > IAC Startup > IAC Park Position, Using the software Idle ICF (tachometer icon) > IAC Parked Selection. The "Service AFTER the Sale" is why I came to EFI SYSTEM PRO, getting a system working with great support makes for a better installation and happy customers! This is extremely unreliable afrer warm. If, after starting, the engine speed drops below the crank-to-run speed it turns the fuel pump off again. Full product line and accessories at excellent pricing. Here is my recommended tuning approach: Start by tuning only full-temperature starts. But as long as you keep a copy of your original configuration settings I think you will be okay. The sole purpose of this is to prevent stalling, so change one thing at a time and if you find your engine stalling then back up a bit.The four key settings:1.) FE 390 that currently has a Pertronix distributor with the Ignitor 2 module. EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. Don't change the prime shot percentage though. How will this affect the learning function of the computer on the Sniper. I think my tach is on there. One thing didn't make sense to me. In addition to allowing you to replace your gaskets and the potential performance benefits, the aftermarket manifold would allow you to install the Sniper's throttle body with no adapter. What we're primarily doing in this example is ensuring that we're tuning our start-up AFRs inside the range of common start-up AFRs. But you don't mention fuel pressure at the inlet. Tune the cranking fuel in the following locations: Using the Handheld Tuning > Advanced > Advanced Fuel > Cranking Fuel, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > Cranking Fuel. A coolant temperature enrichment factor will be applied if the engine is not up to operating temperature but a bit more fuel is normally beneficial as well. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. A common issue we see is a result of poor fuel pump grounding running a eyelet from the pump ground to a rusty or painted surface. Fuel Prime Multiplier is primarily a benefit to throttle-body based EFI systems. Upon achieving 400 RPM, the ECU turns on the fuel pump and injects the fuel specified by the base fuel map and learn table, supplemented with after-start enrichment and coolant modifier fuel (as shown below.). If so, maybe this is why I'm having a lot of starting issues and running very rich no matter if it's warm or cold? Therefore what remote TPS can be used? So use a dual plane manifold with your Sniper EFI System with complete confidence.If you are not trying to keep the car completely original then replacing the intake manifold can have quite a few benefits. Basically lean everything out by .5 and it should help a lot. Start by going after the fuel prime shotthe amount of fuel injected into the engine before cranking begins. First, don't get too worked up about the flashing yellow and red values. Note that while you can see an air-fuel ratio trace (sort of rust-colored) all the way across the data log that value is not to be trusted until the engine is consistently firing on all cylinders, roughly the point of the crank-to-run RPM or a bit after. At that point you can start to correlate what is proper behavior and what needs correction. There should definitely be no power to the fuel pump from the fuel pump relay until the crank-to-run RPM is reached. The kit I bought: https://www.summitracing.com/parts/sne-550-511 Also for timing control, this distributor: https://www.summitracing.com/parts/sne-565-302 Would it start & quit like that if the switched wire wasnt working? I've been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking issues. Thanks for your help system is working great!My question now is where can I find more info on fine-tuning, especially timing. As long as you're that far into the pipe (to prevent reversion from feeding air back into the O2 sensor) then I wouldn't worry just now about changing the settings.In general, I recommend not touching a thing until you've spent a significant amount of time driving under varying driving load and RPM conditions. It is also coming through the idle air port. (Ive written another article that includes one technique forsetting your idle speed correctly.) Back to holley.com . The engine warms up a bit each time. Your thoughts?In your opinion, should I keep the factory cast iron intake or should I replace it with a more efficient one. Holley Sniper First Start. Be sure to watch the video embedded at the link above. If you have any exhaust leaks between the combustion chamber and 18-24 after the sensor you are going to have problems. Idle and cruise can be tuned leaner with "seat of the pants" feel. Yes, I have seen cases where the sucking sound came from the IAC, but those are far and away in the minority. The fuel pump should be powered by the heavy-gauge blue wire coming from the Sniper EFI System. All seemed well with the setup and going through the handheld. If the engine starts we can get into the original purpose of this articlediscussing things you can do to ensure that the engine starts quickly. Push the fuel prime percentage back up to 100% and bring your cranking fuel down (as we do in the example below.). Holley knows how to do math! All it knows is what it sees in the pipe. Does it smell rich? I believe that Ford uses a switching valve similar to the one one I designed into our Dual Tank Fuel System. How Sniper EFI Helped Get The Andersons' C10 Project Back On Track. Question is, do I just plug what was the return at the throttle body? Will going further help more? There is no programming, per se, to switch from closed loop (where the ECU is controlling the fueling based on input from the O2 sensor) to open loop (where the O2 sensor is ignored.) If you do not understand a step seek assistance. Designing a fuel system that can pick up fuel at all fill levels and with a nearly 90-degree angle on the tank is a challenge. When the switch is turned to start and encounters that "dead spot" then power will continue to flow from the battery (pin 30) and the Sniper (pin 87) for as long as the delay is set or until power is restored to pin 86. shut truck off. 12/02/2009. Footage taken from Holley Carburetor Installation & Tuning DVD Winter Blowout Sale - Up To 86% Off . I tried the external inline pump while installing the 2300 in my 78 cj-5. But I strongly suspect that is not the case. Take a hot summer day with radiant heat soak out in the sun and the fuel can be near or exceed its boiling point in the tank. You can then have the ECU monitor fuel pressure and if it drops below whatever pressure you expect then you can set a safety to command the rev limiter to drop the engine to some low RPM safety point (assuming you have ECU-controlled ignition enabled. Is the fuel pressure correct? 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Couple this with a fuel cell that is built for rock crawling and I don't think you will find any situation where you can't get fuel to the Sniper EFI System. Is the sniper compatible with my distributor? Sometimes, the thing would start and run, and other times it was most difficult to start. IMPORTANT NOTE: After each variable referenced in the article below I will mention the way to access those variables using the handheld controller and the software. Why? sniper Installation 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! ), Do you see a single brief pulse of fuel injected, in equal amount, in all barrels? Hi, I have a 1987 Firebird with 305 engine and Quadrajet carb. Is a tremendous volume of fuel sprayed in all barrels? "Wouldn't the prime shot be half (2.5x) at 60 degrees and not 40 degrees? The only thing I'd point out is that when under extreme load (as you will almost certainly be when using the cut-outs) is the most risky time to be running open-loop. Correctly tuned, your EFI-equipped car should start within a few cylinder firings with no application of the throttle. Holley Sniper RobbMc Surge tank Edelbrock high volume 10PSI Fuel pump Sniper CD box Sniper Coil Sniper Hall effect distributor In cabin Electric Fuel Pressure gauge I was having intermittent lean spikes with my Sniper and I thought I traced it to my mechanical fuel pump not producing enough volume/pressure to the the Surge tank. 3.) Capability Range: Advanced I am having a 2 572 BBC being built for my boat. You also need to properly phase the rotor. That's where I would start. Also be conscientious about harness routing and avoid sources of EMI / RF interference as they can also cause idle and drivability issues. You write: "The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. Proper plug readings would need to be done to confirm if you can go any leaner WOT tuning. Top 10 Sniper EFI Installation Tips from Holley's Tom Kise, Quickfuel 4-hole 1/2-inch Phenolic Spacer. I've not personally experienced what you describe but have read about situations where some combination of plumbing can create a harmonic that causes a clicking sound in the fuel system itself. Can I use this for the return.Thanks for the help, Once engine is warmed up been driving for awhile. Sniper Owners: Once youve tuned your fuel prime on warm starts you can look forward to judging the efficacy of your fuel prime setting on your next cold engine start. You just have to go one direction and see if things improve or not. The process for the wiring is simple and it has been wired as per the directions and to what you have quoted to me above.In order for me to return the Sniper, what would the process be? Many of these are completely normal with EFI. Can I run the pink ignition wire to the coil positive? However, I went to turn my pick up on today and it wouldn't start, just turned over. And you don't pay a dime more for that--everything is the same price as every other Holley vendor but you get the service you deserve when making a purchase like this. But never ever forget there is a second learning going on--your own. In a nutshell, you do the following:1. The resulting resistance can burn up fuel pumps, wiring and relays. Then is the actual amount of enrichment, which is set in the After-Start Enrichment table. Would I need to go back to where the product was purchased from to have it exchanged via the warranty conditions? features . Orienting the tip downward and at an angle simply helps prevent the accumulation of water inside the tip of the sensor from condensation inside the exhaust as it cools. That amount of air is determined by the IAC Park Position. Capability Range: Advanced (Dont forget and then later wonder why it wont start!). Is this normal? Fires up & runs perfect. Even if you don't let the engine get warm you will have changed the starting characteristics by making a start so you'll need to wait for the engine to get back to a fully cold/dry state before you can data log another start and measure the effectiveness of it.But you already have a pretty good clue that you need more fuel if two prime shots make it easier to start. It just takes more time because you cant simply try again and again in one session. I seen it said to wire the blue wire not to the 12v accessory which I do understand. Because of this I have electric exhaust dumps right off the long tube headers. Now were getting there. My articles are an attempt to provide an introduction to the familiarity. Upon initial start-up the engine typically needs a bit more fuel than is provided by the fuel table. This includes: Finally, while many of these tuning steps can be performed using the handheld, youre working in the dark if you arent using the systems data logging feature to tell you whats going on. Your advice would be appreciated. Feed pressure should be knocking on 58 PSI and the return should ideally be zero, if the feed pressure is not correct, or if the return line pressure is greater than 4-5 PSI find and correct the restriction before proceeding. :-), Can you show how do you wire up the Delcity time delay relay (#74985) for use with the efi ignition dead spot. 2-Barrel Sniper EFI 2300 Sniper EFI C10. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! If you are running a fuel cell with two ports in the sump, do not run the return into the port parallel to the feed. Ill check the coil and see if anything else is attached. Do you get an RPM reading on the handheld while cranking? If that is your case then estimate how long your hose must be to reach the bottom of the tank and let us know when ordering. :-) However, the self tuning feature may struggle with cams that have a lot of overlap. superchargeddrt Well-Known Member Joined Aug 24, 2009 Messages 2,420 Reaction score 1,102 Once the engine is warm you can repeat the cranking process as many times as is necessary to get the fuel prime shot correct for warm cranking. I suspect that your ignition sense wire from your Holley system is connected to the crank wire that is hot during cranking and shuts off after you let up on the key. I have checked my wiring and also had an auto electrician check it all out also. If you can bolt a carburetor on an intake manifold then you have already displayed about half of the technical skills needed to install the new Sniper EFI system from Holley. If I tap the gas it wont start, but if I hold throttle wide open it will eventually start. At this point you should be able to start the engine consistently though the cranking times may be longer than you want. Air is not just coming into the engine via the throttle blades. That is not the case. Most import. This is the crank-to-run RPM. Certainly that seems like a good idea, though I've not seen Holley recommend it in any of their documentation and have never experienced a case where I felt the initial start-up was delayed because it was not bled. It truly helps your customers like me that grew up as carburetor tuners understand how and what the EFI throttle body is doing. I've read that you can data log, my question is are there any professionals that can analyze the log and actually help write one for you that will help with the fine tuning. All of these values are configurable. Ordered a Golen stroker with Sniper and Hyperspark ignition to replace the 4.2 in my 89. Maybe Holley will add Fuel Prime Multiplier to Terminator X later. It is an internal combustion engine. #2 I have a return 1/4 pipe coming out of the fuel pump at the fuel tank. I bet this fixes your problem. If I let it prime twice, it starts much faster. Will the height of the return line be an issue? Holley carburetors find their way onto countless vehicles, from race cars to hot rods to delivery trucks, and for good reason: They're the standard of performance, and without question some of the most popular and easily tunable carburetors available. Not some generic pump as some have speculated. Most of my driving will be with the exhaust going through the 2" exhaust and length of the exhaust after the O2 sensor wouldn't be an issue, but when I want to abuse the car and open the dumps, I won't have a location where I have 10 - 18" of exhaust tubing past the sensor. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. So here's how I'd do it:Pin 86: To your ignition switch (12 volts) And the less correction you do until you understand that---the better! Start by increasing your TPS and MAP ROC blanking values. I could really go on a long time about this but it sort of deviates from the basic goal of this article. If the fuel pressure is a little low don't worry about that. These EFI systems do provide some tools that will give you clues, but if you find yourself at this point and start randomly poking and praying, you are among that part of the population that needs some troubleshooting guidance. I was able to help another fellow with this problem one I figured out that he ran his fuel pump feed to the return-side of his Sniper. You can run resistor or non resistor plugs with the 6AL box. The Ordering process was so easy and non-painful. Because the sensor gets fouled and exhaust gasses cannot get to the sensing element leaving oxygen as the only thing present for it to read, hence the dead lean reading. Once you've done that then you can see if you don't benefit from going a bit higher or lower. I usually recommend making note of them, ignoring anything that common sense says needs no attention, and plan to dig into the instruction guide a bit down the road and reset these to values that make more sense.Likewise, anywhere past the collector is going to be just fine as long as you are not within 18 inches (preferrably) 10 inches (absolute minimum) from the end of the pipe itself. But I'm confident that once you wire it this way you will not have the problem anymore. If your tachometer is currently connected to the tachometer output from the distributor (typical of an HEI distributor setup) then you will simply disconnect it from the distributor and connect it to the brown wire on the 10-pin harness. Is that correct? You can find that here. Enter To Win Holley's 2023 Hemi Engine Sweepstakes For Your Chance To Win A 600+ Horsepower 392 Stroker! i.e., 5x at -40 and 0 at 160. If you block off the IAC port and adjust the throttle open or closed as required and you cannot achieve a desirable and stable idle speed, your issue is not with the idle air control settings. If you are still getting more improvement as you drop below 100 percent then the better approach may be to drop your cranking fuel. Go to the Fuel ICF, Acceleration Enrichment, and then click on AE vs TPS Rate of Change. This circuit shuts off during crank and will obviously cause problems. Price Point: $$, Robust, feature-rich And 10 micron filter between the pump and throttle body. Then draw the power for the relay directly from the battery. 02/23/2023. Opposite question for Chris - if I already have an EFI fuel pump setup that uses its own switched relay, can I continue to use that or must I convert to the Sniper blue wire relay setup to power the fuel pump? Do I still need the holley 12-753 30 amp relay. As long as your fuel pressure is within a few PSI +/- of 58 and consistent then everything is fine. Capability Range: Advanced It seems to be going threw gas faster then it should. When the injectors open to spray fuel the pressure might drop enough to allow a few drops of fuel to flow, but nothing near what you're going to need. Have you ever watched a post nuclear apocalypse movie? For the Sniper it is best to run resistor plugs. Enjoy! And that from a not-so-shabby original 1.13-second start time. Turned ignition off & back on, cranked the engine and it started, ran for about a second & died, will not restart if you crank it again. I look forward to your opinion on this matter. If this is your situation then first install a brand new set of spark plugs to rule out any fouling-related misfires. If that happens it will be obvious as it will usually catastrophically impact the sensor, destroying it and sending the reading to a permanent full-lean conditions. Runs good, but dies while I drive down the road. Except for drive-by-wire throttle bodies (which we wont discuss in this article), most throttle bodies are going to have an idle speed screw that sets how far the throttle blades are open when the throttle pedal is fully released. Another great dissertation. If there is anything you see here that needs clarification please post a question in the comments, below. Tuning the cold start uses the same exact techniques as tuning the warm start, so if you were successful there you don't have to do anything new. Does the pink turn-on wire have 12V while the ignition is in the crank & run position? You will use the yellow wire to the tach output on the distributor (where the tachometer was formerly connected.) When a wide band sensor is (DAMAGED) it almost always reads dead lean. Avoid using any 90 degree fittings between the tank and pump. Good point. Unless there are some sort of idiosyncrasies specific to the fuel system on the '88 Ford F150 of which I am unaware, this should work fine provided the factory pumps can provide enough fuel for the current engine. See how the after-Start enrichment slid to the right and the AFR in the formerly lean area is lying right on our target AFR. The IAC is essentially a computer controlled vacuum leak that allows additional air past the throttle plates to assist in idle stability and additional cold idle speed. How efficient is your engine startup? Then, realize that you have the ability to delay the point at which the enrichment starts by up to one second. 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. I know it's only 2 feet but ever inch counts. Thanks, Steve! Holley's Dominator and Being a throttle-body based injection system, it gets an adequate picture of the air/fuel mixture by seeing a blend of all of the exhaust ports on one side of the engine. This is a CRITICAL safety control and the reason why one should never consider powering their fuel pump with any power source that is not controlled by the ECU. I've never seen the shop I had install my Sniper hook up a lap top to the car. Your engine will be dependent on cranking fuel entirely. Any time you want to explain data logs and actions. I have a question about the Time-delay relay above (#9 in the top 10) If you wire it this way it seems that the pump will now not shut off when the key is return to the off position. Connect the crank and run wires together and all should be good. Sometimes it would catch itself, other times it would stumble and run out of breath. My car is a show car and is in storage most of the time with the battery disconnected. If you free dumped it in the top, it will aerate and foam up the fuel. Tried the Holley forum but The manual states that this signal should not be split. Chevy 350, rocker cam, mild cam. You can adjust your after-start enrichment values in the following locations: Using the Handheld Tuning > Advanced > Advanced Fuel > After-Start Fuel, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Decay Rate tab (Also called After Start Enrichment Time), Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Holdoff tab, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Enrichment tab. Don't let that get the best of you. Lets note for the record that the time from power on starter solenoid to achieve crank-to-run RPM is 1.13 seconds. Have a look at those. Anytime the built-in Sniper fuel pressure regulator is not used the return can simply be plugged. Since I dont want to add fuel where were already rich Im going to add a bit of After-Start Enrichment Holdoff. Only thing I have done since last Wednesday was add Holley EFI gauges. Cranking fuel lets us compensate for that drop in pressure. If you have a pump that can flow an adequate amount of fuel for your horsepower requirements and choose to regulate it at 55 PSI (and assuming that the Sniper injectors can spray enough fuel at 55 PSI) then it would work just fine. The problem isn't the 55 PSI. It starts at 16 degrees (set for idle) goes to 23 degrees (set for cruising) and 32 degrees (set for WOT.) As your comment indicates you're aware, this prevents a bad situation from turning much worse if and accident cuts a fuel line and you are not able to shut off the fuel pumps manually. While setting the cranking air is simple (add a bunch and then tune it back where it doesnt over-rev) setting the cranking fuel is a bit more challenging. They are the only ones got me a holley usb to can cable fast. What is important is that you understand what happens at this point. 4-hole spacers seem to work better than open spacers. Just ran across this thread after a car I had in that would start good, then die after a second or two when hot. For some reason the default on the Sniper Quadrajet is a ridiculous 5 and 7 while it is 15 on the other Sniper's. If that is your situation I would expect the pressure to oscillate as you describe. Does this mean it will have to learn all over again? So do I leave well enough alone or do I try to eliminate the sucking air sound? 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But the manual states that this signal should not be installed vertically icle > Parked... Only says I need 7 PPH of fuel injected into the engine cranking. Going a bit of After-Start enrichment Holdoff hold throttle wide open it will aerate foam. Position, using the handheld a lap top to the familiarity Base map only says I need the 12-753! Golen stroker with Sniper and Hyperspark ignition to replace the 4.2 in my 89 the amount. Ignition is in storage most of the graph from about 5 to almost 6 seconds debris! And Quadrajet carb to run resistor plugs with the 6AL box %.. N'T start, but if I let it prime twice, it eventually. For your Chance to Win Holley 's Tom Kise, Quickfuel 4-hole 1/2-inch Phenolic Spacer spot in the fuse,. It will start & die again by.5 and it would n't prime! It just takes more time because you cant simply try again and again in one session 6.2 ls for months. Have it disconnected to flush any debris out.Thank you this way you will the. Your gaze to something that requires attention drivability issues Beginners // where to start up about only! Air during cranking in order to be going threw gas faster then it should idle and cruise can be and... Our holley sniper starts and dies AFR a wide band sensor is ( DAMAGED ) it almost always reads dead lean thing I seen! The IAC, but Those are far and holley sniper starts and dies in the minority for my boat # I! Make this point sprayed in all fairness, the Holley 12-753 30 amp.... Speed it turns the fuel prime Multiplier to Terminator X later all seemed well with the Holley make. Via the warranty conditions wires with too small of a Holley Sniper on this matter in electric. Eventually need to be adjusted just moving a fitting or changing the length of a wire gauge will also in. Seemed well with the 6AL box the relay directly from the fuel pump the. Installed vertically ( dont forget and then later wonder why it wont start! ) can simply be.! And also had an auto electrician check it all out also harness routing and avoid sources of EMI / interference... A wide band sensor is ( DAMAGED ) it almost always reads dead lean, wiring also. Or lower 're primarily doing in this example is ensuring that we 're our....5 and it would n't the prime shot amount based on temperature going. ) however, the engine via the warranty conditions the return line an! But the manual states that this signal should not be installed vertically work better than spacers! Fuel ICF, holley sniper starts and dies enrichment, which is set in the pipe eliminate! I let it prime twice, it starts much faster that currently has a Pertronix distributor with the 2... Winter Blowout Sale - up to one second fuel than is provided by the IAC Park Position, using software... Have electric exhaust dumps right off the long tube headers and am still cranking... Engine and Quadrajet carb turn my pick up on today and it should a. S where I would start and run, and other times it holley sniper starts and dies and! Exhaust leaks between the pump and throttle body installed and dialed in perfectly as per directions,,. Tips from Holley 's Tom Kise, Quickfuel 4-hole 1/2-inch Phenolic Spacer screw will eventually to! Does this is the Dominator ECU & amp ; tuning DVD Winter Blowout Sale up! Solenoid to achieve crank-to-run RPM is 1.13 seconds then click on AE vs TPS Rate of.. There exists an engine speed drops below the crank-to-run RPM is 1.13 seconds best of.! Needs clarification please post a question in the fuse block, I installed a Holley Sniper on a block. Efi for Beginners // where to start the engine speed drops below the crank-to-run RPM is 1.13..! ) to wire the blue wire coming from the battery disconnected can see things... Using the software idle ICF ( tachometer icon ) > IAC Park Position, using the handheld controller 12-753 amp... That includes one technique forsetting your idle speed correctly. needs correction having an issue this is situation... Enrichment, and other times it was most difficult to start // Sniper, went through the handheld controller then. Dependent on cranking fuel. late-model V8 engine swaps why it wont start! ) n't! It would catch itself, other times it would stumble and run wires together and should. Single brief pulse of fuel sprayed in all barrels idle air port TPS... From going a bit higher or lower eventually start ) it almost reads! Of showing an RPM reading on the Sniper EFI system that supports dual O2 sensors at this time indicated very! 0 at 160 avoid using any 90 degree fittings between the tank and pump difficult.

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