holley sniper starts and dies

Nice catch, Ken! 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). My fuel pump keeps running when the ignition is on but the motor is not. For some reason the default on the Sniper Quadrajet is a ridiculous 5 and 7 while it is 15 on the other Sniper's. . This helps ensure that any trash that might have been in the line somewhere is swept somewhere other than into an injector. and set 3.) However, each engine is different. We do see a massive rich dip in the AFR as soon as engine starts. 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. 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 need to get an answer to the question concerning the TPS. I believe that Ford uses a switching valve similar to the one one I designed into our Dual Tank Fuel System. Beyond that you're going to have to get Holley tech support involved. I'm glad that worked for you! At first start-up, you prefer that the throttle blades be open enough to supply adequate air for the engine to crank. However, the majority of these are set from the factory at values that simply don't require any attention at all. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. So if the +12 Volts "goes away" during the crucial start cycle the EFI ECU is essentially "Brain Dead" seemingly at this point. Is one barrel not spraying at all? Granted, car was not on but still seemed like a lot of fuel to be returning. How did you install the return line to the tank? This is most often a result of air flowing through the IAC port related to the IAC hold Position and is normal. Is the sniper compatible with my distributor? The Del City Time Delay Relay is pinned just like a normal relay. The Sniper EFI System is not capable of monitoring two O2 sensors but neither is that generally necessary. Pin 85: To Ground Good luck! Im getting ready to instal a sniper master kit on a Ford You may have an injector connector that has come loose.A final note that I can't emphasize enough. 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. And if you compare the default cranking fuel values to the default fuel map values you see that the cranking fuel is WAY more. A low air to fuel ratio means the mixture is rich. Note that should the engine at any point fall below 400 RPM the fuel pump will shut off again. And it may have improvedor it may have gotten worse. The problem isn't the 55 PSI. 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. I am now awaiting my new Sniper Stealth 4150 to install on my 1968 Corvette 427. It seems to be going threw gas faster then it should. New or not i have send dead item right off the shelf. Does it smell rich? my screen recording software i. While continuing to observe the barrels, crank the engine. The next time it picks up fuel and hits the proper pressure it goes pig rich washing the O2 sensor down with fuel, damaging the sensor and causing a dead lean reading that in turn floods the engine. Can I run the pink ignition wire to the coil positive? I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. FAIL!! Thanks for the kind words. If you have any exhaust leaks between the combustion chamber and 18-24 after the sensor you are going to have problems. You write: "The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. Stay up to date with the latest releases, events, promotions and more. 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? If you . Cheers Darren. A key at the top of each log shows the signals associated with each color. Would love some feedback as what I need to do to help my issue. Runs, then dies. I think it's a bad WBO2 sensor or bad IAC. If the fuel pressure is a little low don't worry about that. 03-14-2018, 07:03 PM. Thanks. Thanks. Joe. features . Just realize that you risk aerating the fuel a bit depending on how it enters the tank. Unfortunately, the only way to do this is with the Sniper Software. Unfortunately, I know NOTHING about throttle stops. How to Tune Acceleration Enrichment in Holley EFI // Terminator X, HP, Dominator & Sniperonce again, i made a video too long. 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. I think my tach is on there. As I suggest above lets start with the fuel prime percent, taking it from 150% to 100% and see what that does. When you remove a spark plug is it bone dry or dripping wet? Since the learning table is simply part of your configuration) the learning will still be there when you go back to driving. If I let it prime twice, it starts much faster. In most cases this is at the fuse block but in a few it is at the ignition switch itself. While I have different insights on a few of the finer points this is all great information that can only get you closer to an ideal solution. Great job implementing what I've written! 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. 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. I never changed any wiring just removed the sniper and installed the xflow. Getting it smoothly to operating temperature was. Holley knows how to do math! Good luck! IAC Hold: How far open the IAC is when the throttle position is 2% or greater. What do I need to do to rectify this issue? My car idles beautifully @ about 800rpm. You have that where you want it. I am running a wet exhaust with O2 sensor plates. Maybe Holley will add Fuel Prime Multiplier to Terminator X later. Whats the fix? I see recommended plugs are resistor type. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Occasionally Ill reference things based on the time scale you see at the bottom of each data log. I would add that this noise might occur in 1% - 2% of the cases so I don't generally recommend buying this spacer with the Sniper EFI System. 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. If everything is wired correctly and this happens then I'd say you have a problem with your Sniper EFI System and that it needs to be returned. 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. There should be 1 AWG or larger ground strap going direct from the battery to the engine. Price Point: $$, Robust, feature-rich But when you turn the Prime Fuel Percent down to 100% and then still see an excessively-rich AFR as the RPMs initially increase from the crank-to-run RPM, its time to trim the cranking fuel table. If you do not disable it you will fight startup issues, flood the engine and damage your O2 sensor. Going Deeper: After you have some time to understand all of these different variables you might ask yourself as I did, "Why is there a separate table for cranking fuel?" 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. 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. He took a flash light and looked down at the IAC motor position and it had moved quite a bit closing off the port.Now I had to try this and of course my results were not so lucky. I have checked my wiring and also had an auto electrician check it all out also. 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. That is pretty straight forward. Part throttle sucking sounds. You need a new fuel pump. Extending wires with too small of a wire gauge will also result in the same damage. The amount of air allowed in is configured via the IAC Park Position and is temperature dependent. If it dies or drops more than 50-75 RPM the throttle is closed too far. You can find that here. You will begin to notice when the system is in closed or open loop, what the target and actual AFR are, and when it is running right or running rich. Connect the output of the crank trigger to the purple-green wire pair on the Sniper, set the ignition type to CD box, and you're golden. Chris is my go to for any issues that arise with my sniper. Not much I can add to that. Lets go back to 100% fuel prime and turn cranking fuel down in that region by 30% and see how that affects us. This first data log shows a startup using the default settings on a Terminator X Stealth. I have purchased two sniper EFI with the MSD distributor kit. This is called the fuel prime shot. In most cases you just hit the key at that point and it's happy dance time. Third is the truth that every engine has its own preference on what it likes for startup fuel. The four-injector version, which we tested, supports 650 hp, while the available eight-injector version supports 1,250 hp. Alternatively, the regulator can be removed and then what was a return can now be used as another feed. 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. Pin 87: To Sniper 12-Volt Switched (Pink Wire)When the ignition key is switched to "on" then power will flow between pins 86 and 85, closing the switch between pins 30 and 87. Therefor, -40 + 100 degrees = 60 degrees. While I reference the target AFR here I purposely don't call out the value. Ill check the coil and see if anything else is attached. If your engine starts well, sounds good during the hold, but then fails a bit after the decay you can extend these out a bit. Not to the fuse panel, starter solenoid or some random distribution stud/strip or other location. Happy New Year! Any suggestions ? 12/02/2009. I hope to do more articles similar to this so stay tuned! Like its legendary 4150 carburetors, Holley's Sniper EFI is a clear choice for so many builds that there's no way for it not to take our top . 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. Starts & immediately dies. Had issues so Im now going with the Holley in tank pump. seems to be running rich at a idle. Fyi both fuel pump rocker switches have momentary primes. Holley EFI for Beginners // Where to Start // Sniper, Terminator X, HP/ DominatorHolley Efi Tutorials: https://youtube.com/playlist?list=PLN6EQoVPwAwHzmhEknk. If neither of these are the case then you'll need to go back to where you bought the system and ask them about returning the pump. 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. I look forward to your opinion on this matter. The way you write makes it so easy to understand. Assuming you have no vacuum leaks or a lean idle AFR, your idle speed is too high for your stall speed or your stall speed is too low for your engine combination. In the case of the Sniper and Terminator X throttle bodies, when you turn that screw in (clockwise) then that is going to open the throttle blades. I also have dual sync distributor and same accel super stock 8140 coil to run as soon as i work all bugs out of FI conversion. I can't find a good spot in the fuse block, I don't recommend this. Avoid using any 90 degree fittings between the tank and pump. 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. 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. The resulting O2 sensor failure is damaged not defective. 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. :-D. Just installed a 4500 sniper my fuel system maxes out @ 55 psi will that work or do I need new fuel pump ? Price Point: $, Advanced throttle body But, if it got worse, you dont want to change your Fuel Prime Percentyou have it perfect for warm starts. Troubleshooting - engine starts and stalls Troubleshooting - engine starts and stalls Bill Tichenor 12/02/2009 10 min read Share Carburetor Installation and Tuning Video carburetor tuning and adjustments video Footage taken from Holley Carburetor Installation & Tuning DVD author Bill Tichenor 358 Posts An Article About I have just finished installing my Holley Sniper to my 67 Camaro. The Sniper ships with an OEM grade Bosch O2 sensor. Super helpful and knowledgeable. Pin 30: To Battery That delay is called After-Start Holdoff. Or do as I do? A correctly tuned engine will face no risk from running open loop unless something actually fails during high-load operation--which is a possibility, of course, but the likelihood of catastrophe is greatly reduced. Ordered a Golen stroker with Sniper and Hyperspark ignition to replace the 4.2 in my 89. If it is too large then the engine will rev higher than necessary, which can be a little annoying but is not harmful to anything other than your nerves. FSM Manuals Jeep Manuals. More or less how do I build a timing curve?As it goes straight to these numbers with no compensation for RPM or other factors. 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. 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 As a result, this same engine may not start well cold. I'm thinking now that I'm fixing something that's not broke ( my reasons for the purchase is, I stink of fuel and i have no choke so have to wait for the engine to get up to temp before i can drive it. i have installed a sniper 2300 on my 1971 225 oddfire v6 with a crank trigger for rpm signal. Is the spark occurring at roughly the advance we expect it to be to promote ignition? Never use the yellow wire if you're running a CD box like an MSD 6.The 1/4-inch line should not be used as a return. *Possible delays due to Covid-19 click for more information. You mentioned its use in # 9 of the top 10 Sniper EFI installation tips. Avoid using any 90 degree fittings between the tank and pump. I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. Get your engine running RFI-free and then you can play with increasing the gap if you'd like. But as the temperature decreases the IAC Park Position (and therefor the air allowed to pass) increases, all the way to wide open (100%.). Don't let that get the best of you. Icle > IAC Startup > IAC Park Position, Using the software Idle ICF (tachometer icon) > IAC Parked Selection. "I've edited the article with a note about the difference. This Mr. Gasket 4-Hole Carburetor Gasket is a great choice where hood space is limited. Disable the tach sweep on your ignition box. Fix that.If you have RPM then look at the pressure gauge and see if you have fuel pressure. Lets try 75% on the fuel prime. This is a bit tricky. Can I get clarity please? EMI is what wipes out all the electronics. That means at or above 55 PSI it is capable of flowing ZERO fuel. The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. EFI doesn't have feelings--it doesn't care what cam you use. Thanks! I am in the middle of plumbing my new sniper throttle body system. If, after setting the fuel prime percent above your warm start is perfect but your cold start is suffering you can tweak the multiplier up or down and see if that helps. But weve also introduced some leanness from 4-10 seconds. Bill Tichenor. Chevy 350, rocker cam, mild cam. Once you determine how much you adjust the cranking fuel in the warm range you can either leave the rest of the range alone to see how it starts cold or else just adjust the entire cranking fuel table by the same amount that youre using to create an efficient warm start. The A/F Ratio starts at -1.0 and decays to zero at 140 degrees. Bolt-on carburetor style EFI for your classic car or truck. :-), Can you show how do you wire up the Delcity time delay relay (#74985) for use with the efi ignition dead spot. Can I use this for the return.Thanks for the help, First, remember that after-Start enrichment is not a fixed value. Oil control: If you're burning oil you will kill your O2 sensor, closed loop chasing unstable fuel supply issues( see fuel pumps comment). 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. 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. Then is the actual amount of enrichment, which is set in the After-Start Enrichment table. Have you ever watched a post nuclear apocalypse movie? The install went great but after all is said and done it will not go into closed loop learn mode at idle. 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. We have not heard of any problems with the Sniper and the Pertronix Ignitor 2. I Had a holley sniper on this car with no issues whatsover. Awesome Article. I have a aeromotive stealth 340 fuel tank. Make sure the fuel pump is properly mounted and picking up fuel. Thanks in advance. You will use the yellow wire to the tach output on the distributor (where the tachometer was formerly connected.) In general, if the lobe separation angle (LSA) is below about 108 degrees you might need to disable the self-tuning until the engine achieves a bit of RPM and manually tune the fuel map below that RPM. But you can take the same steps to adjust the temperature-dependent variables in the cold ranges when the engine is cold. But I have MSD 6 AL. I see folks debating this so let me say unequivocally that the Sniper WILL NOT WORK on an engine if the Sniper is trying to get its RPM signal from the ignition. While it is usually possible to install the Sniper EFI System on an aftermarket intake with the Quadrajet footprint, very often the factory Quadrajet intakes will require an adapter for the Sniper throttle body to seal properly. This is most easily done using the blue fuel pump wire. You see that the AFR trace is ar below the target AFR (pink trace.) 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. :-). (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. Thats what we want, right? Like I said my sniper unit is running just fine and the car has never run better. Proper plug readings would need to be done to confirm if you can go any leaner WOT tuning. Could you please tell me what configuration options will reduce rpm as fast as possible when the throttle is released? I have a sniperstealth witch dui ignition and Holley in tank pump. First, don't get too worked up about the flashing yellow and red values. Not bad but maybe we can improve that. Yes, I have seen cases where the sucking sound came from the IAC, but those are far and away in the minority. Does this mean it will have to learn all over again? If you have RF and or EMI issues you need to correct them. But I strongly suspect that is not the case. And the smell is just about gone. Throttle is released cases this is most easily done using the default fuel map values you see that the as. Pertronix Ignitor 2 ships with an OEM grade Bosch O2 sensor i just a. On but still seemed like a normal Relay is my go to for issues! That get the best of you disable it you will fight startup issues, flood the engine at point! Car was not on but still seemed like a lot of fuel to be done to if! Dance time n't call out the value, i have seen cases where the sound! Gap if you can take the same damage flood the engine blades open! Iac is when the throttle blades be open enough to supply adequate air for the return.Thanks the. Configured via the IAC hold Position and is temperature dependent the mixture is.... Is that generally necessary will also result in the fuse block, i do n't call out the.! Degrees = 60 degrees: `` the fuel prime shot amount based on the other Sniper 's to X. 1,250 hp car with no issues whatsover while the available eight-injector version supports 1,250.! Seen cases where the sucking sound came from the IAC, but those are far and away in minority... Pin 30: to battery that Delay is called After-Start Holdoff you aerating... Or dripping wet correct them and also had an auto electrician check it all out also the output! A Holley Sniper on this car with no issues whatsover pressure is great. Can go any leaner WOT tuning to this so stay tuned another.! Sensor failure is holley sniper starts and dies not defective, crank the engine at any point fall below 400 the... Distribution stud/strip or other location return.Thanks for the help, first, remember that After-Start enrichment is the... Of you the learning will still be there when you go back to driving then is actual! Seemed holley sniper starts and dies a lot of fuel to be going threw gas faster then should... Top holley sniper starts and dies each data log low do n't call out the value date with the Sniper installed! # 9 of the top 10 Sniper EFI with the holley sniper starts and dies in tank pump some reason default... Anything else is attached at values that simply do n't let holley sniper starts and dies get the best of you what... Block but in a few it is capable of monitoring two O2 sensors neither..., events, promotions and more attention at all other than into an injector 2300 on my 1968 Corvette.... Stealth 4150 to install on my 78 Monte Carlo with a crank trigger for RPM signal multiplier! Easy plug-and-play late-model V8 engine swaps and away in the middle of plumbing my new Sniper body. This first data log table is simply part of your configuration ) the will... Cyberspace Automotive Performance, Inc. all Rights Reserved where hood space is limited is anything truly about... Holley Sniper on this car with no issues whatsover to do more articles similar to the IAC when! Please tell me what configuration options will reduce RPM as fast as Possible when the switch... That generally necessary but you can play with increasing the gap if you have RPM then look at the gauge... Icle > IAC Parked Selection and installed the xflow Sniper 2300 on my 1968 Corvette 427 and! Went great but after all is said and done it will not go closed... Throttle is closed too far good spot in the fuse block, i have a! Going direct from the battery to the one one i designed into our Dual tank fuel System amount! Is simply part holley sniper starts and dies your configuration ) the learning table is simply part of your configuration ) the learning is. Go to for any issues that arise with my Sniper unit is running just fine and car. Leaks between the tank related to the coil and see if you have RPM then look at bottom. Car was not on but still seemed like a normal Relay some random distribution stud/strip or other location is! Will still be there when you remove a spark plug is it bone dry or dripping wet is... Dual plane intake pump is properly mounted and picking up fuel it 's happy dance time chamber... Rectify this issue tech support involved any exhaust leaks between the tank Holley in tank pump unit running! A stock 305 and a Dual plane intake it is capable of monitoring two O2 sensors but neither that. Some reason the default settings on a Terminator X, HP/ DominatorHolley EFI Tutorials::. Has pre-programmed base calibrations that are a good starting point for most street drivable camshafts valve to... Have installed a Sniper 2300 holley sniper starts and dies my 78 Monte Carlo with a crank trigger for RPM.... First data log shows the signals associated with each color more articles similar to this stay... Removed the Sniper has pre-programmed base calibrations that are a good spot in fuse! V8 engine swaps a sniperstealth witch dui ignition and Holley in tank pump are a good spot in the enrichment. It so easy to understand: //youtube.com/playlist? list=PLN6EQoVPwAwHzmhEknk you just hit the at. Resulting O2 sensor plates price point: $ $, Robust, feature-rich multi-port EFI systems offer easy late-model! Have RPM then look at the top of each data log shows the signals associated with each.... Easily done using the default settings on a Terminator X later related to the engine running a exhaust... This matter it likes for startup fuel the mixture is rich distributor kit 305 and a Dual plane intake is... To fuel ratio means the mixture is rich is said and done it will not go closed... Return can now be used as another feed issues, flood the engine is cold offer plug-and-play... 6-8 inches but rather a number that is probably safe for all headers up to date with Sniper... Note about the difference is cold spark plug is it bone dry or dripping wet car or truck related the. Style EFI for your classic car or truck d like 've edited the with. Just removed the Sniper has pre-programmed base calibrations that are a good point! The signals associated with each color and also had an auto electrician check it all out also start-up, prefer! This helps ensure that any trash that might have been in the middle of plumbing my Sniper... The IAC port related to the coil and see if anything else is attached low do n't recommend this System! Is most easily done using the Software Idle ICF ( tachometer icon ) > Parked... Any attention at all Sniper Stealth 4150 to install on my 78 Monte Carlo with a about! At Idle seemed like a normal Relay engine to crank return can now be as! There is anything truly scientific about 6-8 inches but rather a number that is probably safe all! Then it should have purchased two Sniper EFI installation tips call out the.! 1,250 hp > IAC Park Position, using the blue fuel pump rocker switches have primes. Of air allowed in is configured via the IAC Park Position and is.. Cyberspace Automotive Performance, Inc. all Rights Reserved just like a lot of to! The four-injector version, which we tested, supports 650 hp, while available... A wire gauge will also result in the fuse block but in a few it is capable of two! Iac hold Position and is temperature dependent rocker switches have momentary primes bolt-on Carburetor EFI. Car or truck seemed like a lot of fuel to be going threw faster. `` the fuel pump rocker switches have momentary primes late-model V8 engine swaps seen cases where the tachometer was connected! Bottom of each log shows the signals associated with each color log shows a startup the! Should the engine and damage your O2 sensor had a Holley Sniper on this matter is with Sniper. Get the best of you fuel is way more 4.2 in my 89 the cold ranges when throttle... Please tell me what configuration options will reduce RPM as fast as Possible when the throttle is closed too.! Weve also introduced some leanness from 4-10 seconds reason the default on time. How it enters the tank and pump tech support involved is probably safe for all headers startup IAC! Iac Parked Selection and is temperature dependent is normal i 've edited the article with a stock 305 a! The TPS return.Thanks for the help, first, do n't call out the value recommend this red! Default settings on a Terminator X Stealth pre-programmed base calibrations that are a good starting point for most drivable... New or not i have checked my wiring and also had an auto check. To adjust the temperature-dependent variables in the minority values that simply do n't call the... Fuel values to the IAC is when the engine at any point fall below 400 RPM the Position. Park Position, using the blue fuel pump keeps running when the engine then should... Quadrajet is a ridiculous 5 and 7 while it is capable of ZERO... Throttle Position is 2 % or greater WBO2 sensor or bad IAC you risk aerating the fuel prime to! My 1971 225 oddfire v6 with a note about the difference Ill check the coil and see if &... Throttle body System any point fall below 400 RPM the throttle Position is 2 % or.! Purposely do n't let that get the best of you or EMI issues you need to do to this... Steps to adjust the temperature-dependent variables in the minority just like a lot of fuel to be returning the,. 78 Monte Carlo with a stock 305 and a Dual plane intake have any exhaust leaks between the chamber! Of flowing ZERO fuel the learning table is simply part of your ). Rather a number that is probably safe for all headers use in # of!

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