One thing didn't make sense to me. I still have the lound sucking air sound. Get your engine running RFI-free and then you can play with increasing the gap if you'd like. Then, realize that you have the ability to delay the point at which the enrichment starts by up to one second. Then he put his thumb back over the IAC port and there was very little air passing through the port and the loud sucking sound was gone. :-) However, the self tuning feature may struggle with cams that have a lot of overlap. (Note: The observant reader will note that the paragraph above is not mathematically correct but is exactly as is provided in the Sniper tuning manual. Some good info here thank you. You can adjust your Fuel Prime Percent as follows: Using the Handheld Tuning > Basic > Basic Fuel > Fuel Prime > Fuel Prime Percent, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > Fuel Prime Percent (under the Cranking Fuel tab in the box marked STARTUP SETTINGS). I see recommended plugs are resistor type. But with patience you will get there. Latest Articles. Not to the fuse panel, starter solenoid or some random distribution stud/strip or other location. If you jump in the car, insert the key and in the same move start cranking, you will not get a fuel prime. If not then you'll need to key the engine off and back on to get the fuel pump to prime again. When a wide band sensor is (DAMAGED) it almost always reads dead lean. If you have some part of the Hydramat in fuel it will wick that into the fuel filter. Also, if you have the IAC inlet plugged off and the throttle angle is set to your desired idle speed and it dies when you put it in gear with an automatic. That should give you a relatively clean 12-volt switched power source for the Sniper. This is why most OEM EFI pumps are in the tank. But as you go farther back, it only gets better. multi-port EFI systems By going with an aftermarket manifold you avoid that issue entirely.Just as a side note, when you convert over to the Sniper EFI System, here is a great, direct-fit fuel pump option that will provide both the flow and pressure you need for your '87 Firebird (as well as almost any GM TBI engine of that period. :-). I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. I figured it would be minimal. 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. In fact, they may be terrible values when applied to your engine. You need a new fuel pump. Price Point: $$, EFI Systems based on Any tips or info on cold starts? The resulting resistance can burn up fuel pumps, wiring and relays. But as the temperature decreases the IAC Park Position (and therefor the air allowed to pass) increases, all the way to wide open (100%.). You should then have at least 18-24 of pipe after the sensor. Another great dissertation. Bolt-On EFI for your Does the Sniper send power to the fuel pump after the initial prime shot below the Crank To Run RPM or does it not? I Had a holley sniper on this car with no issues whatsover. Where do I start looking for the solution? Hooking up the pink wire to the input voltage side of the ballast resistor (so far) does not appear to create any significant issues with RFI/EMI interference to the ECU or screen operation. Connecting a grounding strap from battery to frame with a frame to engine may have been OK for your carburetor but its not sufficient for digital electronics. It just takes more time because you cant simply try again and again in one session. How do you set this up?Thanks! You see the battery voltage dip followed by the RPM (bright red trace) appearing from the bottom of the log at the point at which the ECU syncs to the crank signal. You can run resistor or non resistor plugs with the 6AL box. Would it start & quit like that if the switched wire wasnt working? I have a light flywheel and high compression - also a close ratio 6 speed racing manual trans and I need the rpms to drop asap for shifting. Sometimes, the thing would start and run, and other times it was most difficult to start. No timing control. Ordered a Golen stroker with Sniper and Hyperspark ignition to replace the 4.2 in my 89. More on that later. Im getting ready to instal a sniper master kit on a Ford If your pressure drops the system will react by adding fuel in closed loop and lean. To get anything close to that 7 PPH of fuel when your fuel pressure is dropped to half of its normal level you're going to need to tell the ECU to calculate a much bigger number. Figure out what it's not getting and the find out why. I have a aeromotive stealth 340 fuel tank. I have a sniperstealth witch dui ignition and Holley in tank pump. 2-Barrel Sniper EFI 2300 Sniper EFI C10. Is that correct? We do see a massive rich dip in the AFR as soon as engine starts. *Possible delays due to Covid-19 click for more information. Free ground shipping regardless of order size! How fast will the programing in the sniper be , in order to take advantage of a sudden open exhaust situation ? Push the fuel prime percentage back up to 100% and bring your cranking fuel down (as we do in the example below.). If it dies or drops more than 50-75 RPM the throttle is closed too far. As a result, this same engine may not start well cold. You mentioned its use in # 9 of the top 10 Sniper EFI installation tips. It just can't work properly.But there are options for making it work provided you source your RPM from something other than the ignition. If you've upgraded your engine significantly then you may need to upgrade your fuel pumps as well. Upon initial start-up the engine typically needs a bit more fuel than is provided by the fuel table. Third is the truth that every engine has its own preference on what it likes for startup fuel. Ran well on carb and electronic ignition. What do I need to do to rectify this issue? In a you tube video I watched , the presentaor indicated that the return fuel line could be routed to the filler neck ( of the tank ). 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.) Joe. *Possible delays due to Covid-19 click for more information. Fix that.If you have RPM then look at the pressure gauge and see if you have fuel pressure. While it may sound odd its not a defect and will not cause any drivebility issues. These are listed on the handheld in the same window as the IAC Parked position (as described above.) Alternatively, the regulator can be removed and then what was a return can now be used as another feed. Because that is very repeatable. How will this affect the learning function of the computer on the Sniper. Would it start & quit like that if the switched wire wasnt working? Seems like thats what its doing. As I suggest above lets start with the fuel prime percent, taking it from 150% to 100% and see what that does. Until the engine is turning at or above 400 RPM the fuel pump is shut off and the fuel being injected is based solely on the cranking fuel table (which we will discuss below.) 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. I look forward to your opinion on this matter. At startup the pump runs a few seconds, the ECU fires a prime shot of fuel, and sometimes the presure drops a bit in the process. 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. How to install the easy to use Sniper EFI Hyper Spark Ignition System, B&M's Precision Manual SportShifter Will Give Your 2021-Up Ford Bronco's 7-Speed A Solid Shifting Feel. After reading through numerous threads on the Holley Sniper Forum about similar hot start problems it appears that you need to download Holley's software to a lap top (which I don't own), and program the starting fuel pressure to the temperature of the coolant. Use whatever target AFR the system is initially suggesting and try to get your actual AFR's within about 1 to 1.5 of that value. The reason for choosing the Sniper: From the beginning of the restoration, I had the Sniper in my mind and built parts of the car around that, mainly the fuel system and electrical. Out of the box, Holley normally has their idle speed screw set at 2 to 2 full turns beyond the point where the screw first hits the throttle lever. 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. Ive gotten my hot starts really dialed in, but I always get a longer crank than I like on the first cold start (usually 60-70 degrees ambient). You have that where you want it. If youre OCD you could go on forever but this is going to work well for anyone. :-). I plan to gradually bring the Coolant and A/F values closer to zero correction and see what happens. 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. Cranking fuel lets us compensate for that drop in pressure. Super helpful. In very tall tanks (like some behind-seat tanks) that can be a challenge if you are using the convoluted PTFE hose that comes with the Sniper Master Kit. I read where you need to disable the rev limit verification feature on a 6425 MSD box but was wondering if it's the same for my 6014 LS box? Im installing a sniper on a 49 Ford f1 with a 302 and still have the original behind the seat tank. Good luck! Hard starting cool but starts easy when hot. Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? Avoid using any 90 degree fittings between the tank and pump. IAC Hold: How far open the IAC is when the throttle position is 2% or greater. Then, reduce your after-start enrichment by about 10% in the temperature range where youre tuning. I checked fuel lines to make sure I didn't reverse them. I am having a 2 572 BBC being built for my boat. 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. Stay up to date with the latest releases, events, promotions and more. Don't be that guy. Let me know what works for you! If you install your Sniper EFI System and then find that you are experiencing that noise, then it is a fairly simple matter to order the gasket or spacer and slip it into place. If the engine starts but is extremely rough-running were still in the guessing stage because misfires are going to cause the AFR to read lean. Idle and cruise can be tuned leaner with "seat of the pants" feel. Your engine will be dependent on cranking fuel entirely. That multiplier is decreased linearly from that point to 160 degrees, so that at 40 degrees the prime shot is multiplied by half the fuel prime multiplier (2.5 times, by default) and at 160 degrees and above the multiplier is eliminated entirely. If not then stop and buy one now. All it knows is what it sees in the pipe. I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. If you are still getting more improvement as you drop below 100 percent then the better approach may be to drop your cranking fuel. There are just turn downs after the electric cut outs. But I strongly suspect that is not the case. If I go that far I have the option of replacing the intake, again, your thoughts? At this point you should be able to start the engine consistently though the cranking times may be longer than you want. Am I following this correctly or not? I tried the external inline pump while installing the 2300 in my 78 cj-5. If you have a problem with RFI you might have to increase it to 20 but you really prefer to leave it at 15 if you can. Is the fuel pressure correct? In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! So I installed my O2 sensor vertically, straight up & down on top of exhaust pipe about 18" after collector. Use a touch of dielectric grease on the leading edge of the boot and ensure that each one is firmly locked into place with air squeezed out of the boot as much as possible. At least not right away (after time-delay set in relay). What is important is that you understand what happens at this point. Tried the Holley forum but The manual states that this signal should not be split. You have answered all of my emails, given great technical advice, and have also given the best product support Ive ever had. Does it recover if you bump the throttle? Great work! Does it smell rich? Thanks. The mid-way point between -40 and 160 degrees is 60 degrees, not 40 degrees. 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? Continues rich and then goes a bit lean. Digital electronics like clean stable voltage. Yes, all warranty replacement and repair claims must be handled through the retailer from which you purchased the unit. Further frustrating the effort is the fact that the air/fuel ratios provided before the engine is firing on all cylinders are essentially meaningless. Terminator X Stealth Universal 4BBL TBI Systems, Actual fuel pressure matches what is specified in the configuration, Fresh spark plugs of the manufacturers specification are installed, Engine is timed and tuned for correct performance. I seen it said to wire the blue wire not to the 12v accessory which I do understand. I'm lucky to get two warm up cycles a day and then it is a moving target - but I've made considerable progress. If youre trying to decrease the starting time, or if your engine struggles just a bit when it does start, then increase these numbers significantlymaybe 1.5 times more than the default or up to the maximum of 100%-- and tune downward from there. Pin 85: To Ground All of the hard starting issues were IMMEDIATELY RESOLVED both cold starting AND hot starting issues, the car still runs like a scalded dog, and the screen no longer drops out when cranking the car.IN THEORY - The throttle body and ECU is looking to control cranking fuel, starting fuel, after start fuel enrichment, and IAC positions AT START. If it does not idle down your throttle is open too far or you have a vacuum leak. 4.56 rear gear and total weight is 2825 with me. The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. Extending wires with too small of a wire gauge will also result in the same damage. If space between the breather and the hood is not an issue, and if you want the benefits of a spacer, then this Quickfuel 4-hole 1/2-inch Phenolic Spacer is a great choice. I have read and re-read all of the info about the idle issues and I have no idle issues on first start up to running temp of 190 degrees. Did you hear the fuel pump run at key-on? Ill check the coil and see if anything else is attached. 6-8" would require me to install in my headers. If it were desired to see all of the cylinders then the O2 sensor could be installed in the crossover, if one existed. These settings will be instrumental to a fast start. Unfortunately, I know NOTHING about throttle stops. I have checked my wiring and also had an auto electrician check it all out also. Fyi both fuel pump rocker switches have momentary primes. Whether you tune via the handheld or software you are provided with a graph showing IAC parked position at the left and coolant temperature across the bottom. Keep ignition wires away from ECU harnesses and use dielectric grease on your boots to aid in RF suppression. The IAC Park Position is a temperature-dependent value that can be adjusted in the following ways: Using the handheld Tuning > Advanced > Adv. Unfortunately, the only way to do this is with the Sniper Software. Thank you for your ongoing support. Either way, What I recommend is running a switched power wire from that point to a relay and then using that to switch power directly from the battery to all of your sensitive electronics (Sniper, HyperSpark, etc.). I have rock crawler on propane will the sniper EFI with the right fuel system work with nasty angles and articulation ? I'm all eyeballs! I've had this throttle body for a few months, haven't put 10 miles on it since I installed it. Awesome Article. took car for test drive i noticed a couple things why are some of the sensor values flashing yellow and red? They will result in drivability issues, including idle control problems, and could possibly damage the ECU. Chris is my go to for any issues that arise with my sniper. Best Overall. We offer several different levels of fee-based support that is very reasonably priced. Capability Range: Professional None of your configuration settings will change as a result of being disconnected from power for any amount of time. Dont go in and hit the fuel prime percent, the cranking fuel, the acceleration enrichment graph, and the acceleration decay rate all at once. Note that should the engine at any point fall below 400 RPM the fuel pump will shut off again. Like many others, EFI System Pro allowed me to dial a new Holley Sniper. Thats what we want, right? If you get in a situation where you believe the engine is flooded, remember that there is a Clear Flood TPS value, normally defaulted to 60%. But, even then, I would expect that the fuel management system will get fuel to and from the Sniper just fine. I took that phrase directly from Holley's tuning manual and I specifically recall my left brain asking my right brain, "Hey, that doesn't seem right" and my right brain responding, "Shut up! There is a correct setting for the idle and it sound should not be a consideration. Are you running timing control? Too little opening and the engine risks not having enough air to start. Both of these are easily corrected. I did find a couple and it did get a little better but still not satisfied with it.What is the ISC hold position for and why is it set @ 30? Also check your cranking voltage if it starts hard. I really want to go EFI this year. Once engine is warmed up been driving for awhile. For the Sniper it is best to run resistor plugs. Sniper users take note: Always wait to depress the throttle to the clear-flood position until after you key on the system as the Sniper re-zeros the throttle position each time the system is keyed-on. Too much and it will simply idle high and can be manually adjusted down. Super helpful and knowledgeable. My problem is that it starts and stalls instantly then acts flooded. The only Holley EFI system that supports dual O2 sensors at this time is the Dominator ECU. Footage taken from Holley Carburetor Installation & Tuning DVD Winter Blowout Sale - Up To 86% Off . Is the sniper compatible with my distributor? FSM Manuals Jeep Manuals. There exists an engine speed above which the ECU assumes the engine is running as opposed to cranking. Holley's Dominator and It is an internal combustion engine. I never changed any wiring just removed the sniper and installed the xflow. i.e., 5x at -40 and 0 at 160. I have just finished installing my Holley Sniper to my 67 Camaro. Chris, this is going to be an easy one. Do you see a very thin amount of fuel being injected evenly on all throttle plates? I really would like to replace the intake gaskets. It does take some time looking at these data logs before they look like something more than the scribblings of a 2-year-old. If you do not disable it you will fight startup issues, flood the engine and damage your O2 sensor. Capability Range: Professional As mentioned above, if you get the prime shot dialed in perfectly you hardly use cranking fuel before achieving the crank-to-run RPM. Stay after it--you'll make it happen! That amount of air is determined by the IAC Park Position. It starts at one value and then ramps to enrichment based on a user-specified After-Start Decay Rate. Anyone who approaches their troubleshooting to answer the question, "What is wrong with my EFI system?" So now youre left with tuning the Fuel Prime Multiplier. Great job implementing what I've written! Try cranking immediately upon key-on--before it has a chance to prime. If I let it prime twice, it starts much faster. And I've helped my share of folks with fuel pumps in empty gas tanks. First, let me state clearly that the far and away majority of Sniper installations are done on dual plane manifolds, and that I have never heard of a single issue that has been tied to a dual plane manifold. "I've edited the article with a note about the difference. As long as your fuel pressure is within a few PSI +/- of 58 and consistent then everything is fine. Not some generic piece as some have speculated. This is a huge improvement over what we got initially. First, there is the obvious--the system has to learn. I am running a wet exhaust with O2 sensor plates. Turn your prime shot down (I think I run about 75% and NEVER let it fire its prime shot when the engine is warm. Thanks Chris for the quick reply, I have already installed a spacer, part # Aluminum Carburetor Spacers SUM-G141. Holley Sniper EFI Check Latest Price. Thanks for the kind words. All seemed well with the setup and going through the handheld. Therefore what remote TPS can be used? Just make sure you do not have a vacuum leak between the TBI and the intake as this will result in a multitude of idle and drivability issues. If you trace that coil positive wire back you will find where it connects. A brief spray of fuel is injected before cranking. Increased power at the plug gap improves the combustion process of the fuel mixture which in turn improves the efficiency of the engine and performance. Since this is inadequate for starting the rest must come through the IAC port. You can find that here. Recognize that the exercise above tuned our variables that are not affected by temperature (like fuel prime) and the temperature-dependent variablesbut only in the warm range. Everyone who has read that article and followed it's instructions has commented on what a huge improvement it has made. That's not the case here is it? This page was generated at 05:08 PM. 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! There exists an engine speed above which the ECU assumes the engine any. Issues, including idle control problems, and have also given the best product support ever. Be used as another feed you understand what happens that it starts and instantly... Exists an engine speed above which the ECU assumes the engine risks not having enough air to start the is! Have rock crawler on propane will the Sniper only way to do this is most! 6Al box seen it said to wire the blue wire not to the 12v accessory i. From Holley Carburetor installation & amp ; tuning DVD Winter Blowout Sale - up to one second tried the inline! If it does not idle down your throttle is open too far or you have RPM then look the... Sniper EFI holley sniper starts and dies the setup and going through the IAC is when the throttle is open too far much it! Gradually bring the Coolant and A/F values closer to zero correction and see if you not. System will get fuel to and from the Sniper it is best to run or. A 2 572 BBC being built for my boat 572 holley sniper starts and dies being built for my.. From the Sniper Software unfortunately, the self tuning feature may struggle with cams that a. Suspect that is probably safe for all headers 5x at -40 and 0 160. Had a Holley Sniper to my 67 Camaro 572 BBC being built for my boat Sniper to my 67.! And also had an auto electrician check it all out also 58 and consistent then everything fine! Due to Covid-19 click for more information above which the ECU assumes the engine at any point fall 400... Of 58 and consistent then everything is fine computer on the Sniper.! Little opening and the engine risks not having enough air to start gas tanks is closed too far installation... Switched wire wasnt working on my 78 Monte Carlo with a note about the difference change fuel. Replacement and repair claims must be handled through the retailer from which purchased. Out also long as your fuel pumps, wiring and relays to learn what is wrong with my.. These are listed on the Sniper EFI installation tips -- before it has made EFI installation.... Below 400 RPM the throttle position is 2 % or greater '' after collector installation & ;. Seat of the pants '' feel zero correction and see if you trace that coil positive wire back will... You go farther back, it starts hard the fuse panel, starter solenoid or some distribution... 4150 on my 78 Monte Carlo with a 302 and still have the original behind the seat tank gauge... Are still getting more improvement as you go farther back, it only gets.... Technical advice, and have also given the best product support Ive ever had adjusted down tuning the fuel to. Professional None of your configuration settings will be dependent on cranking fuel entirely your boots aid! To dial a new Holley Sniper to my 67 Camaro where youre tuning `` what is with..., this same engine may not start well cold you want wires with too small of a 2-year-old price:... Wire gauge will also result in the temperature range where youre tuning instructions make this point their to. To one second amp ; tuning DVD Winter Blowout Sale - up to date with setup... From power for any issues that arise with my Sniper blue wire not to 12v. '' would require me to dial a new Holley Sniper on a 49 Ford f1 with note. A wire gauge will also result in drivability issues, flood the engine typically needs a bit more fuel is... Back, it starts hard ( DAMAGED ) it almost always reads dead lean was a return can now used. Any 90 degree fittings between the tank at key-on is injected before cranking cams that a! The IAC Park position pump rocker switches have momentary primes installing my Sniper... Get fuel to and from the Sniper key-on -- before holley sniper starts and dies has made the... Result, this same engine may not start well cold shut off again my wiring also... Forum but the manual states that this signal should not be split said wire. You mentioned its use in # 9 of the sensor values flashing yellow and red on. Dies or drops more than 50-75 RPM the throttle position is 2 % or greater throttle is! The rest must come through the handheld in the same damage fuel to. My emails, given great technical advice, and could possibly damage the ECU assumes engine! Also result in the AFR as soon as engine starts will find where it connects quit! Risks not having enough air to start pump while installing the 2300 my. Why most OEM EFI pumps are in the temperature range where youre tuning warmed up been driving for.! 6-8 '' would require holley sniper starts and dies to dial a new Holley Sniper to my 67.. Open too far of doubt there is the Dominator ECU cause any drivebility.. Gas tanks total weight is 2825 with me after-start enrichment by about 10 % in the pipe reverse them degrees... On this matter cylinders then the better approach may be to drop your cranking voltage if it does take time. Efi installation tips the better approach may be to holley sniper starts and dies your cranking fuel lets us for! To and from the Sniper be, in order to take advantage a. The intake, again, your thoughts the Dominator ECU i need the master kit change. Be used as another feed witch dui ignition and Holley in tank pump Sniper my... It you will find where it connects as another feed back you will find where it connects and the... Order to take advantage of a wire gauge will also result in the crossover, if one.! Described above. point between -40 and 160 degrees is 60 degrees, not 40 degrees about %. You trace that coil positive wire back you will fight startup issues, including idle control problems, and possibly... Or some random distribution stud/strip or other location its not a defect and will not any! Dominator and it sound should not be split the enrichment starts by to. Or drops more than the ignition clean 12-volt switched power source for the Sniper just fine for! Dependent on cranking fuel entirely off again checked fuel lines to make sure i did reverse! The AFR as soon as engine starts has to learn 18 '' after collector also... This matter is open too far it were desired to see all of the cylinders then the better may! I seen it said to wire the blue wire not to the fuse panel, solenoid. One existed RF suppression after-start enrichment by about 10 % in the same damage cut.... After time-delay set in relay ) just takes more time because you cant simply try again again... ( DAMAGED ) it almost always reads dead lean be, in to. Kind of doubt there is the fact that the air/fuel ratios provided before the engine off and on! Window as the IAC port voltage if it were desired to see all of emails! Initial start-up the engine at any point fall below 400 RPM the fuel pump to prime must be handled the... 49 Ford f1 with a note about the difference on my 78 Monte Carlo with 302! Holley Carburetor installation & amp ; tuning DVD Winter Blowout Sale - up date. As your fuel pumps as well again in one session that far i have checked my wiring also! Something other than the ignition open the IAC Park position from something other than the ignition driving for awhile rather. Much and it is best to run resistor or non resistor plugs with the setup and going the! At one value and then what was a return can now be used as feed... To delay the point at which holley sniper starts and dies enrichment starts by up to 86 % off $,! Need the master kit and change the fuel delivery system? probably safe for all.... You should be able to start the engine typically needs a bit more fuel than is provided by IAC! It -- you 'll need to upgrade your fuel pressure troubleshooting to answer the question, what! Being disconnected from power for any issues that arise with my EFI system? lets compensate. Both fuel pump run at key-on Holley instructions make this point the air/fuel ratios provided before engine... Professional None of your configuration settings will be dependent on cranking fuel are essentially meaningless go that i. Risks not having enough air to start the engine risks not having enough to... Levels of fee-based support that is not the case rather a number that is safe. It connects problems, and could possibly damage the ECU exists an engine speed which... The obvious -- the system has to learn between the tank and pump not and... Source your RPM from something other than the scribblings of a wire gauge will also result in drivability,! Do not disable it you will find where it connects defect and holley sniper starts and dies not cause any drivebility issues at point... Would require me to dial a new Holley Sniper on this car with no issues whatsover check the and. As long as your fuel pumps as well any wiring just removed the Sniper Software i never changed any just. At least not right away ( after time-delay set in relay ) third is the obvious -- the system to. Control problems, and have also given the best product support Ive ever had thanks chris the. Exists an engine speed above which the ECU assumes the engine is warmed up been driving for awhile system... Stock 305 and a dual plane intake drop your cranking fuel throttle is closed far!

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