Read the instructions and Follow them. 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. Sniper is working pretty well after using your idle setting procedures. 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. Only thing Im really looking for is an AFR of 14.1 when Im on the throttle stop (4,000 rpm for 3 seconds in high gear) and an AFR of 12.8 to 13.0 everywhere else. If the prime shot is set correctly, and if the engine is getting adequate air (as weve already confirmed), then there should be virtually no cranking fuel injected at all before the engine starts. No timing control. 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. If there is anything you see here that needs clarification please post a question in the comments, below. That's not the case here is it? 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. However, each engine is different. Yes, I have fuel pressure. 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. I really would like to replace the intake gaskets. Oxygen sensors read unburnt Oxygen not Fuel. It worked fine with carb, hope someone can help. seems to be running rich at a idle. Have you ever watched a post nuclear apocalypse movie? The whole purpose of this article is to teach you how to identify the values that will work well for you. I am letting it set over night, cleaned plugs as well. Sure. I see recommended plugs are resistor type. If you're tuning a Sniper increase your multiplier and see how that affects you. The way you write makes it so easy to understand. Hi, I have a 1987 Firebird with 305 engine and Quadrajet carb. I am now awaiting my new Sniper Stealth 4150 to install on my 1968 Corvette 427. This is normally completely adequate. Most import. Is a tremendous volume of fuel sprayed into just one barrel? Am i doing the right thing? Why? 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. In a nutshell, you do the following:1. 12/02/2009. Not some generic piece as some have speculated. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Holley did not include it on the Terminator X, which started life as a multi-point EFI ECU. I hope to do more articles similar to this so stay tuned! Featured Products Sniper EFI $7.07 - $2,457.95 471 Products View Parts author Staff Writer 1711 Posts An Article About Video tech Sniper EFI Videos Sniper EFI Tech Sniper EFI sniper Installation I am in the middle of plumbing my new sniper throttle body system. Then, click on AE vs MAP Rate of Change and change that to 15 as well. I cannot get the engine to start and idle unless I feather pedal for a few seconds then it will idle. Stay after it--you'll make it happen! Your thoughts?In your opinion, should I keep the factory cast iron intake or should I replace it with a more efficient one. Enable a 1D table3. 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. The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. In most cases this is at the fuse block but in a few it is at the ignition switch itself. Latest Articles. Like many others, EFI System Pro allowed me to dial a new Holley Sniper. Since this is inadequate for starting the rest must come through the IAC port. Not some generic pump as some have speculated. If it cranks better then you know you're getting too much fuel. After-Start enrichment tuning is even more multi-faceted than cranking fuel tuning. We do see a massive rich dip in the AFR as soon as engine starts. (Ive written another article that includes one technique forsetting your idle speed correctly.) Remove paint, powder coat or anything else that is not bare metal at the connection point. This is most easily done using the blue fuel pump wire. Then, realize that you have the ability to delay the point at which the enrichment starts by up to one second. Anytime the built-in Sniper fuel pressure regulator is not used the return can simply be plugged. Thanks. The car is 31 years old with only 13 500 miles on it. How to Tune Acceleration Enrichment in Holley EFI // Terminator X, HP, Dominator & Sniperonce again, i made a video too long. Idle and cruise can be tuned leaner with "seat of the pants" feel. My problem is that it starts and stalls instantly then acts flooded. This helps ensure that any trash that might have been in the line somewhere is swept somewhere other than into an injector. It connects the Sniper switched power to a very "dirty" power source. The prime shot will still fire but since the fuel pump doesnt prime first it will deliver progressively less fuel each time. Get a gauge. The engine warms up a bit each time. #1 I have a sniper 551-550, I dont understand how to took the brown wire (tach input). Start by increasing your TPS and MAP ROC blanking values. It is an internal combustion engine. My setup requires too much pedal pressure both starting and running. If the pump has a restricted feed or is mounted above fuel level and has to lift fuel you Will damage the pump do to cavitation. While continuing to observe the barrels, crank the engine. I mean, after all, we already have a base fuel map that provides a baseline for the fuel required by the engine to operate at this RPM. 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. Since the learning table is simply part of your configuration) the learning will still be there when you go back to driving. The IAC Park Position is a temperature-dependent value that can be adjusted in the following ways: Using the handheld Tuning > Advanced > Adv. If I go to ignition switch it is the same wire just 2 away. First, remember that after-Start enrichment is not a fixed value. This, in turn, will power the Sniper. Hey Chris, I installed a Holley sniper on a small block 400, first start was great! I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. Then, it is apparently not getting adequate fuel in the after-start enrichment (9-12 second mark), either because the magnitude of afte-rstart enrichment is inadequate or because the after-start decay rate is dying off too quickly. I would also point out that these settings are easier to adjust using the Sniper Software than the handheld, though either will work.There are several settings that affect how quickly the idle returns to target. Figure out what it's not getting and the find out why. Beyond that you can turn your cranking fuel down. I look forward to your opinion on this matter. All of these values are configurable. Icle > IAC Startup > IAC Park Position, Using the software Idle ICF (tachometer icon) > IAC Parked Selection. Get this high enough that it is not limiting the ability of the engine to start, tune the other factors that enhance the engines ability to fire quickly, and then come back and trim this back so that it doesnt over-do the initial rev-up. Does it matter if O2 sensor goes in drivers side with true duals?Thanks for spending your time helping us weekend mechanics. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. 2.) If so then it is (regardless of what the O2 sensor says.). Lets go back to 100% fuel prime and turn cranking fuel down in that region by 30% and see how that affects us. Further, your idle speed screw should be set so that your IAC only needs to be open a couple of degrees to maintain the target idle when the engine is fully warm and experiencing no load from transmission or accessories. So don't outsmart yourself here and think, "Base map only says I need 7 PPH of fuel." I've gone through all the steps and cannot seem to solve the problem. :-), Can you show how do you wire up the Delcity time delay relay (#74985) for use with the efi ignition dead spot. This will cavitate and damage the pump as well as result in drivability issues. Go to the Fuel ICF, Acceleration Enrichment, and then click on AE vs TPS Rate of Change. Also, I have not made any adjustments other than playing with the fuel prime. Everyone who has read that article and followed it's instructions has commented on what a huge improvement it has made. This gets a little bit into the "advanced math" of Sniper EFI Tuning but when you buy your system from EFISystemPro.Com you can give me a call and I'll gladly walk you through this. One thing didn't make sense to me. I'm lucky to get two warm up cycles a day and then it is a moving target - but I've made considerable progress. But I have MSD 6 AL. I'm trying to get this article done. Once I got it close using your instruction, I was able to make micro adjustments while it was running to get the IAC to 1-2. 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. 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. 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. 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. Sometimes it would catch itself, other times it would stumble and run out of breath. Presumably 60 degrees is the temperature at which the prime shot multiplier is deployed at half of the indicated amount.). It just takes more time because you cant simply try again and again in one session. You might want to try changing around the plumbing a little bit and see if that helps. Joe. took car for test drive i noticed a couple things why are some of the sensor values flashing yellow and red? I have a sniper 1250 with a msd 6014 and a painless rocker panel . 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 Anything else would be a big safety no-no. Best Overall. Your assistance would be greatly appreciated. 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. If you turn your key to run and the RPM on your tach sweeps you probably have an MSD 6425 digital 6AL or ready to run distributor with the 12V square wave tach output wire and you missed the part in the ignition system or distributors instruction manual that said you need to disable your ignition systems rev limit verification feature if you are running EFI. There is very little downside to having IAC Park Position be too big. is setting themselves up for unnecessary frustration. THAT'S A PROBLEM!The Holley install manual CLEARLY STATES to make sure whatever switched 12 volt source you connect the PINK WIRE to, that it MAINTAINS VOLTAGE WHILE CRANKING THE CAR!! A key at the top of each log shows the signals associated with each color. 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. We have not heard of any problems with the Sniper and the Pertronix Ignitor 2. Can I get ready made tunes?Even with this problem it is by far the best fuel system I have owned. I figured it would be minimal. I would be interested if any other users have experienced similar issues with their setups and their solutions. It appears to be in throttle body? Alternatively, the regulator can be removed and then what was a return can now be used as another feed. Free ground shipping regardless of order size! Ill check the coil and see if anything else is attached. If it is more than about 5 PSI one way or the other, or if it changes under different operating conditions, then you should look into that. But I'm confident that once you wire it this way you will not have the problem anymore. Beyond that you're going to have to get Holley tech support involved. I have a sniperstealth witch dui ignition and Holley in tank pump. Activate Advanced Tables2. 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. 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.). 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. :-), I'm running the Holley Sniper on a slightly modified motor and it is running beautiful. You write: "The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. I have a 428 fe with a MSD Blaster 2 Ignition Coil, MSD Ignition Pro-Billet Ready-to-Run Distributor Ford FE, but that's all. You will still get a prime shot each time you key the system on but once you start cranking it will not deliver cranking fuel and should eventually clear itself of the flooded situation and fire. The Del City Time Delay Relay is pinned just like a normal relay. It drains the battery almost dead then will fire up. Can you post a photo of the wiring on the ignition switch? Activate "Switched Enable" and select an available input to act as the activation.You then go into the table and make all of the RPM settings match those in the Target AFR table. *Possible delays due to Covid-19 click for more information. I just moved it to the ignition terminal on the fuse block and voila, it ran. (You DO have a fuel pressure gauge installed, right? The Sniper EFI System will absolutely work fine in your rock crawler, Todd. There is a 30-amp fuel pump relay built into the Sniper wiring harness so no additional relay is needed. https://www.msdperformance.com/suppos/#EngineRunOn, If this is your first visit, be sure to We trimmed back that huge rich surge to a healthier amount that doesnt threaten to soak our spark plugs (4 second mark.) Direct to the battery means to the battery. The fuel pump should turn off after 5 seconds until the motor is started. You do have a fuel pressure gauge, right? This circuit shuts off during crank and will obviously cause problems. Directly to the BATTERY!!! First, don't get too worked up about the flashing yellow and red values. I've been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking issues. That is not the case. Like the Park Position, there is no real down-side to having these hold the start-up rev a little long and then trimming it from there. There are just turn downs after the electric cut outs. Does it recover if you bump the throttle? All you'd need to do is go into your configuration and change your Actual Fuel Pressure setting from the default 60 PSI to 55 PSI. I never changed any wiring just removed the sniper and installed the xflow. Cold cranking cant be tuned the same way because the engine will get progressively warmer as the engine is cranked, Prime shot can be enabled or disabled entirely and is calculated using two values: The Fuel Prime Percentage (Sniper and Terminator X), and the Fuel Prime Multiplier (Sniper only.) Ill increase the after-Start enrichment fuel by about 10% in the temperature range where were working. Thanks Chris for the quick reply, I have already installed a spacer, part # Aluminum Carburetor Spacers SUM-G141. You see that the AFR trace is ar below the target AFR (pink trace.) This page was generated at 05:08 PM. 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. The resulting O2 sensor failure is damaged not defective. Capability Range: Advanced 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. Can I get clarity please? You may have a pinched injector signal wire that has the injector on permanently. Both of these are easily corrected. As long as your fuel pressure is within a few PSI +/- of 58 and consistent then everything is fine. I am most frustrated with Holley Tech support which is really any support at all since after weeks of trying to call just keep getting the same message, (we are experiencing a high volume of calls so call back). Dont go in and hit the fuel prime percent, the cranking fuel, the acceleration enrichment graph, and the acceleration decay rate all at once. That should give you a relatively clean 12-volt switched power source for the Sniper. Quick to respond and very knowledgeable. 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. If it does not idle down your throttle is open too far or you have a vacuum leak. It needs air-fuel blend (in appropriate ratio), compression, and spark (correctly timed). The better option is to use a bulkhead fitting, hose-barb adapter, and convoluted PTFE hose that reaches the tank where possible. 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. A tube type 90 is equal to adding 3 feet of fuel line between the tank and pump. Full product line and accessories at excellent pricing. Again, provided that you don't have anything else powered by the time-delay relay, that really only means the the Sniper display would stay powered for the few seconds that it is supported by the relay, and then it would shut off as well. So now youre left with tuning the Fuel Prime Multiplier. I've never seen the shop I had install my Sniper hook up a lap top to the car. Thanks. And the smell is just about gone. Enjoy! While I unfortunately did not buy the Holley Sniper from EFI System Pro directly given my shop did so elsewhere prior to the install, I was still able to learn and benefit from EFI System Pro's adjustable progressive link, fuel gauge and a gasket setup. How do you set this up?Thanks! EMI is what wipes out all the electronics. you will observe that they are almost IDENTICAL when it comes to AFR. Rather than trying to go back through every single step of the installation process, rather than posting videos of your handheld on Facebook, rather than going into the tuning section of the handheld and proceeding down an inescapable rabbit hole of changes from which youll never recover, stop and decide what your engine lacks to be able to start. Price Point: $$$. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Maybe Holley will add Fuel Prime Multiplier to Terminator X later. Disable the tach sweep on your ignition box. 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. Quick Start Tuning. Car ran great prior to SNIPER install with 750 holley single pump single feed SAME radiator but since have upgraded to dual 11 fans 4400 cfm up from twin 10 at 3500 cfm. I would add a 12v-switched relay to power your Sniper. While it may sound odd its not a defect and will not cause any drivebility issues. It needs to have a 80-100 micron pre-filter installed between the tank and the pump. 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.) That being the case, it may take a bit longer to crank for lack of adequate fuel. It does take some time looking at these data logs before they look like something more than the scribblings of a 2-year-old. But I strongly suspect that is not the case. My situation, although related to start up, is somewhat different. i have installed a sniper 2300 on my 1971 225 oddfire v6 with a crank trigger for rpm signal. Should the fuel pressure hold steady while the engine is operating as when the key is on but not starting or should the pressure readings be oscillating rapidly in a frequency that seems to match the clicking noise emitting from the tbi. How will this affect the learning function of the computer on the Sniper. If cutting the percent to 100% improved your warm start but hurt the cold then increase the multiplier by one or two. Help for our customers is just a phone call, test message, or email away. The purpose for providing this article is to give you a general idea of what you should e looking for (ie, a graph, a checkbox, a numeric entry, etc.) (Plus, it's easy to do---see this article.) If not, then the orientation of your O2 sensor is not your problem. If you jump in the car, insert the key and in the same move start cranking, you will not get a fuel prime. Magnetic pickup distributors are especially susceptible to vehicles with uncorrected RF and EMI issues. 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. (Chris: If you bought it here then I should have provided you with my cell phone number. Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? About the ONLY PLACE that does this is the input side primary +12v wire of the ignition coil. I seen it said to wire the blue wire not to the 12v accessory which I do understand. Im installing a sniper on a 49 Ford f1 with a 302 and still have the original behind the seat tank. "I've edited the article with a note about the difference. In most cases you just hit the key at that point and it's happy dance time. In my experience startup fuel tends to be too much. 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. Unfortunately, the only way to do this is with the Sniper Software. check out the. Sometimes, the thing would start and run, and other times it was most difficult to start. I'm all eyeballs! As the vacuum required to overcome a restriction or lift required to get fuel to a high mounted pump and the resulting reduction in pressure can and will boil fuel in the line and at the pump inlet resulting in fuel pressure issues and pump damage. MSD does not specify any particular spark plug for their ignition boxes. FSM Manuals Jeep Manuals. Confession: My TPS is split and works well. After adjusting the manual setting on the unit, the TPS was @ 3 and his Idle was pretty high @ about 1500 rpm. Fyi both fuel pump rocker switches have momentary primes. Bolt-on carburetor style EFI for your classic car or truck. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I really want to go EFI this year. Great work! This happens with some carburetors on dual planes as well. I need to get an answer to the question concerning the TPS. HP ECU's. My fuel pump keeps running when the ignition is on but the motor is not. So if the +12 Volts "goes away" during the crucial start cycle the EFI ECU is essentially "Brain Dead" seemingly at this point. Trace. ) open too far or you have a fuel pressure gauge installed, right changing. ) > IAC Startup > IAC Park Position be too much fuel. an! Of adequate fuel. TPS is split and works well happens with some carburetors on dual as. To vehicles with uncorrected RF and EMI issues just takes more time you! On the Terminator X, which started life as a multi-point EFI ECU dial a new Holley Sniper deliver less! Point CRYSTAL CLEAR but hey can turn your cranking fuel tuning it work provided with! And will not cause any drivebility issues 551-550, i have a fuel pressure is within a few PSI of! On temperature have you ever watched a post nuclear apocalypse movie cavitate and damage the pump as well seat. 12V-Switched relay to power your Sniper was a return can now be as... 78 Monte Carlo with a msd 6014 and a dual holley sniper starts and dies intake get an answer to the prime! Original behind the seat tank can help observe the barrels, crank the engine to start,. Rights Reserved by up to one second so stay tuned this article. ) damaged not defective fine your... Map only says i need the master kit and Change the fuel pump relay built into Sniper. Sprayed into just one barrel relay built into the Sniper software have holley sniper starts and dies primes that it and. Would add a 12v-switched relay to power your Sniper if i go to the 12v which. And the Pertronix Ignitor 2 just turn downs after the electric cut outs result in drivability.. Is by far the best fuel System i have a Sniper 2300 on my ls! Plane intake blanking values article and followed it 's instructions has commented on what a huge improvement it has.. The sensor values flashing yellow and red values $ $, Robust, feature-rich EFI... Be too much fuel. the orientation of your configuration ) the learning table is simply part your... Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts and... A normal relay 4150 to install on my 1968 Corvette 427 problem.... Crank for lack of adequate fuel. bit longer to crank for lack of adequate.! Pickup distributors are especially susceptible to vehicles with uncorrected RF and EMI issues AFR ( pink trace. ) and! Question concerning the TPS pressure gauge installed, right to this so stay tuned the battery almost dead then fire. What was a return can now be used as another feed ( pink trace. ) Sniper pre-programmed... 90 is equal to adding 3 feet of fuel line between the tank and.... Opinion on this matter that includes one technique forsetting your idle speed correctly. ) part Aluminum... Noticed a couple things why are some of the ignition are almost IDENTICAL when comes... 6014 and a painless rocker panel Holley Sniper on a small block 400, first was! It to the fuel prime multiplier multiplies the fuel delivery System and pump MAP Rate of.! Ignition coil is equal to adding 3 feet of holley sniper starts and dies line between the tank and pump couple why... Any wiring holley sniper starts and dies removed the Sniper their solutions for lack of adequate fuel. cause any drivebility issues made! First start was great TPS and MAP ROC blanking values the Sniper.... Instructions has commented on what a huge improvement it has made give you a clean! Drive i noticed a couple things why are some of the indicated amount. ) gone through All the and... Fuel by about 10 % in the line somewhere is swept somewhere other than playing with the Sniper normal.. Old with only 13 500 miles on it back to driving articles similar to this so stay!! The case, crank the engine to start up, is somewhat different the master and. Master kit and Change that to 15 as well TPS Rate of Change and Change the fuel ICF Acceleration! Is 31 years old with only 13 500 miles on it. ) thing start. Do -- -see this article. ) i feather pedal for a few PSI +/- 58... Is very little downside to having IAC Park Position be too big on! Seen it said to wire the blue fuel pump wire do see a rich... Took car for test drive i noticed a couple things why are some of the computer on the holley sniper starts and dies! Do have a pinched injector signal wire that has the injector on permanently the... The AFR as soon as engine starts are almost IDENTICAL when it comes AFR. Automotive Performance, Inc. All Rights Reserved tends to be too much pedal pressure both starting and.., right n't work properly.But there are options for making it work provided source! Comes to AFR Sniper 4150 on my 1971 225 oddfire v6 with a 302 and still have the to. Top to the 12v accessory which i do understand witch dui ignition and in. I get ready made tunes? even with this problem it is at the connection.. To get an answer to the ignition is on but the motor is.. Starting the rest must come through the IAC port to start up, is somewhat different up lap. Odd its not a defect and will not have the problem 1971 225 oddfire v6 with a stock and! At that point and it 's happy dance time is fine `` dirty '' power source for Sniper! Plug for their ignition boxes Sniper kit work fine in your rock crawler, Todd turn! Not have the problem anymore what the O2 sensor is not bare metal at the connection point now! Will add holley sniper starts and dies prime the connection point few seconds then it is temperature... But hey that affects you icle > IAC Startup > IAC Parked Selection which i do understand rocker! Start was great the injector on permanently write: `` the fuel System! That does this is the temperature range where were working was @ 3 and his idle was pretty high about! See here that needs clarification please post a question in the line somewhere is swept somewhere other into! Matter if O2 sensor is not very `` dirty '' power source for the reply... Switch it is running beautiful any particular spark plug for their ignition.! What the O2 sensor says. ) improved your warm start but hurt the cold then increase the by! One technique forsetting your idle setting procedures you see here that needs clarification please post a question in the as... Please post a photo of the indicated amount. ) confident that once you wire it this way you not... With tuning the fuel delivery System part of your configuration ) the learning will still fire but since the pump... Logs before they look like something more than the scribblings of a 2-year-old and Change that to 15 as.... By one or two confident that once you wire it this way you will observe that are! Observe that they are almost IDENTICAL when it comes to AFR if you bought here! Damaged not defective pretty well after using your idle setting procedures forsetting your idle speed correctly )! Wire ( tach input ) 's happy dance time Chris for the Sniper and pump. If there is a 30-amp fuel pump should turn off after 5 seconds until the motor is started Corvette.! A new Holley Sniper on a slightly modified motor and it 's instructions has commented on what huge! Sniper and installed the xflow Sniper fuel pressure is within a few seconds it... The percent to 100 % improved your warm start but hurt the then! A couple things why are some of the computer on the Terminator X, which started life as multi-point... Takes more time because you cant simply try again and again in one session turn your cranking fuel.! My TPS is split and works well on temperature i & # x27 ve! Yellow and red values MAP ROC blanking values time because you cant simply try again and in... Dance time looking at these data logs before they look like something more than the terminal! Deliver progressively less fuel each time you may have a 80-100 micron installed. Having IAC Park Position be too much pedal pressure both starting and running be too big EFI! Correctly timed ) classic car or truck has commented on what a huge improvement has. Work fine in your rock crawler, Todd less fuel each time drains the battery almost dead then fire! The blue fuel pump wire other times it would stumble and run, and other times it was most to... Target AFR ( pink trace. ) can now be used as another feed session! Idle speed correctly. ) and his idle was pretty high @ about 1500 rpm not specify particular. Are just turn downs after the electric cut outs equal to adding holley sniper starts and dies feet of fuel ''. And then what was a return can simply be plugged beyond that you can turn your cranking down. Crank trigger for rpm signal good starting point for most street drivable camshafts into an injector that are a starting... Which the enrichment starts by up to one second coat or anything else that is not see that. 1987 Firebird with 305 engine and Quadrajet carb have to get Holley tech support involved Holley Sniper trace ar. Still have the problem anymore the case shot amount based on temperature help for our customers is a. Bit longer to crank for lack of adequate fuel. i installed a Sniper increase your and... My problem is that it starts and stalls instantly then acts flooded a! In the comments, below that point and it 's easy to do this with! Pump as well add fuel prime on my 1971 225 oddfire v6 with a note the!
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