Thanks Chris for the quick reply, I have already installed a spacer, part # Aluminum Carburetor Spacers SUM-G141. Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? This, in turn, will power the Sniper. Before we move on to Fuel Prime Multiplier tuning, we should point out: Holley left the fuel prime multiplier off of Terminator X EFI Systems. Find a lower price anywhere and we'll beat it by 5%! In fact, they may be terrible values when applied to your engine. Get a gauge. Does it recover if you bump the throttle? Back to holley.com . 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? Its unusual to find someone who knows so much, so eager to share and teach, and knows the products hes selling inside and out, willing to work endlessly with you to get exactly what you need (not his highest profit margin), and then work tirelessly to help you with problems. First, it is fake news that EFI doesn't like big cams. 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. My situation, although related to start up, is somewhat different. If it were desired to see all of the cylinders then the O2 sensor could be installed in the crossover, if one existed. 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 . I'm lucky to get two warm up cycles a day and then it is a moving target - but I've made considerable progress. 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. You mentioned its use in # 9 of the top 10 Sniper EFI installation tips. Good luck! Pinched or Burnt O2 sensor Wiring: Keep it high, tight, and safe. Did your engine start the first time you turned the key after installing your EFI system? I did not, but as I was checking flow at regulator side, it was a large steady flow of fuel coming from regulator. Find a lower price anywhere and we'll beat it by 5%! 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. 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.) Not all 12 volt switched sources in the fuse block of a 55 year old car do this! Once engine is warmed up been driving for awhile. If I go that far I have the option of replacing the intake, again, your thoughts? My car is going on the dyno for final tuning next week. 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). If you can bolt a carburetor on an intake manifold then you have already displayed about half of the technical skills needed to install the new Sniper EFI system from Holley. I think my tach is on there. seems to be running rich at a idle. I have checked my wiring and also had an auto electrician check it all out also. Run the switched 12-volt back as close to the ignition as possible. Alternatively, the regulator can be removed and then what was a return can now be used as another feed. ), Do you see a single brief pulse of fuel injected, in equal amount, in all barrels? Super helpful. The pump needs to be GRAVITY FED, meaning the pump inlet needs to be at or below the bottom of the tank and as close to the tank as possible. So my question is how do I get the IAC motor to close and create less air intake to eliminate the noise? Direct to the battery means to the battery. 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? Feed pressure should be knocking on 58 PSI and the return should ideally be zero, if the feed pressure is not correct, or if the return line pressure is greater than 4-5 PSI find and correct the restriction before proceeding. Free ground shipping regardless of order size! The ignition will ingest the prime shot, fire off a couple of cylinders, and the engine will start before the cranking fuel really makes it into the cylinders. If you have any exhaust leaks between the combustion chamber and 18-24 after the sensor you are going to have problems. 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. 10.5 to 1 compression performer rpm intake comp cams 268/464 cam with everything else stock on unrebuilt 23,000 mile original engine with good compression and oil pressure. You just have to go one direction and see if things improve or not. Air is not just coming into the engine via the throttle blades. I usually recommend making note of them, ignoring anything that common sense says needs no attention, and plan to dig into the instruction guide a bit down the road and reset these to values that make more sense.Likewise, anywhere past the collector is going to be just fine as long as you are not within 18 inches (preferrably) 10 inches (absolute minimum) from the end of the pipe itself. So do I leave well enough alone or do I try to eliminate the sucking air sound? You might note that with warmer coolant temperatures less air is provided for cranking. Yes, if youre color blind you are right out of luck but realize that all of the colors, backgrounds, and trace styles can be adjusted quite broadly in the data log viewing software so you might find something that works better for you when you are doing this on your own. This happens with some carburetors on dual planes as well. Full product line and accessories at excellent pricing. superchargeddrt Well-Known Member Joined Aug 24, 2009 Messages 2,420 Reaction score 1,102 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. Further frustrating the effort is the fact that the air/fuel ratios provided before the engine is firing on all cylinders are essentially meaningless. Joe. Make sure you are using proper wiring practices. 4.56 rear gear and total weight is 2825 with me. 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. 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. Bolt-On EFI for your Please continue to write these type articles as they are invaluable to your customers. I figured it would be minimal. 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. I am now awaiting my new Sniper Stealth 4150 to install on my 1968 Corvette 427. Dont go in and hit the fuel prime percent, the cranking fuel, the acceleration enrichment graph, and the acceleration decay rate all at once. 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. Anouther cause may be the proximity of a dual plane intakes plenum divider to vacuum passages under the throttle body resulting in an odd sucking or whistling sound. I just moved it to the ignition terminal on the fuse block and voila, it ran. From there it is a slam dunk. 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. But as long as you keep a copy of your original configuration settings I think you will be okay. It should be installed in a manner that delivers returned fuel below fuel level. I prefer solder and heat-shrink but technically speaking a well-executed crimp-connection is actually superior. That is not the case. I have an '89 Jeep 4.2L with a Sniper 2300 2BBL on it. At the bottom you'll see AE vs TPS RoC Blanking. You need a new fuel pump. Latest Articles. 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. At this point you should be able to start the engine consistently though the cranking times may be longer than you want. Nobody ever thinks to do this but one of the best tips for confirming that you don't have an issue with your Sniper fueling is to remove the breather, get in a position where you can see all barrels, have someone power on the system, and look for an equal quick spray of fuel in each barrel. To orient you a bit, in each image below youll see that the log starts right at the point where the battery voltage (upper green trace) dips due to the engagement of the starter and continues until the IAC Position (aqua-marine trace) ramps down from the park position and then to where it is again controlling the idle speed. Everyone who has read that article and followed it's instructions has commented on what a huge improvement it has made. But I'm confident that once you wire it this way you will not have the problem anymore. Capability Range: Advanced Go Gators. A couple of questions to ask yourself: Remove the air cleaner and have someone key the system on while you look down the throttle bores. Engine is a BBC 533 and makes just about 800HP. So go forward with your install confident with the knowledge that if you need help, EFI System Pro can provide it. But as you go farther back, it only gets better. That should be adequate to get the engine running. Is the Sniper EFI system rev-limiter capable. Couple this with a fuel cell that is built for rock crawling and I don't think you will find any situation where you can't get fuel to the Sniper EFI System. Already have a new sending unit for gauge, on the fence whether to add in tank or external fuel pump. I am in the middle of plumbing my new sniper throttle body system. 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. Lets note for the record that the time from power on starter solenoid to achieve crank-to-run RPM is 1.13 seconds. A coolant temperature enrichment factor will be applied if the engine is not up to operating temperature but a bit more fuel is normally beneficial as well. Is that correct? 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.) I have had my Sniper system running for 2 years now and often tell people it's the best money I have ever spent. Getting it smoothly to operating temperature was. Upon achieving the crank-to-run RPM the cranking air is reduced in order for the engine to achieve the desired idle speed. Unfortunately, the only way to do this is with the Sniper Software. Maybe Holley will add Fuel Prime Multiplier to Terminator X later. Could you please tell me what configuration options will reduce rpm as fast as possible when the throttle is released? Not some generic pump as some have speculated. This circuit shuts off during crank and will obviously cause problems. Your engine will be dependent on cranking fuel entirely. But I have never heard of anyone else who has had success doing this. what is the proper air/fuel ratio for a sniper on a ford fe 352? Since this is inadequate for starting the rest must come through the IAC port. Beyond that you're going to have to get Holley tech support involved. What is FAR more of an issue is that you have no exhaust leaks either before or up to 18 inches or so after the O2 sensor. If the switch has an engineered dead spot between run and crank ( It did not matter with a carburetor when they designed your vehicle, but its not EFI friendly) and its just not plum worn out, you can install a time delay relay in-line to correct this I use relay part number 74985 from Delcity to overcome the switch design. 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. FE 390 that currently has a Pertronix distributor with the Ignitor 2 module. So use a dual plane manifold with your Sniper EFI System with complete confidence.If you are not trying to keep the car completely original then replacing the intake manifold can have quite a few benefits. I won't buy anywhere else. Hi Chris,Thank you so much for your quick response to my query. When the injectors open to spray fuel the pressure might drop enough to allow a few drops of fuel to flow, but nothing near what you're going to need. Your advice would be appreciated. Yes, I have fuel pressure. Look first at the tachometer on the Sniper handheld. Thanks in advance. Ill check the coil and see if anything else is attached. 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. This is why most OEM EFI pumps are in the tank. However, the majority of these are set from the factory at values that simply don't require any attention at all. In the software, click the IAC Settings button (immediately above the IAC Parked button on the left-hand navigation panel) and look in the section called Startup IAC Position. I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. It truly helps your customers like me that grew up as carburetor tuners understand how and what the EFI throttle body is doing. Price Point: $$$. Once started, it should have a slightly elevated initial idle, ramp down to a level appropriate to the ambient air temperature, and then continue to idle down to the target idle that youve established for the engine. (Chris: If you bought it here then I should have provided you with my cell phone number. You write: "The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. Nothing else (except gas), In a no-start situation my direction is always the same. Price Point: $$, Robust, feature-rich You're not running your EFI system without a gauge are you? But I strongly suspect that is not the case. (You DO have a fuel pressure gauge installed, right? 2.) Words only go so far so I thought Id include a tuning session to give you some idea of whats going on here. The engine needs a certain amount of air during cranking in order to be able to start. Great job implementing what I've written! 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. you will observe that they are almost IDENTICAL when it comes to AFR. Don't change the prime shot percentage though. We stock the PTFE hose and can source as many pieces as are required to reach the bottom of the tank. 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%. The prime shot will still fire but since the fuel pump doesnt prime first it will deliver progressively less fuel each time. So making the right buying decision means you get the support you need from a Holley Tier-III certified professional at no additional cost..If you've made that purchase decision already but would like to get some help, you're not out of luck. How Sniper EFI Helped Get The Andersons' C10 Project Back On Track. The process for the wiring is simple and it has been wired as per the directions and to what you have quoted to me above.In order for me to return the Sniper, what would the process be? The sniper master kits ship with OEM grade 255 LPH Walbro Pumps. to the same number as 4.) It is, of course, important to have a solid knowledge of how engines work and respond to various changes in fueling, and to spend some time getting familiar with what is available to adjust. I always recommend fixing one thing at a time. idles good, runs amazing. Like I said my sniper unit is running just fine and the car has never run better. I have a sniper 1250 with a msd 6014 and a painless rocker panel . I'm all eyeballs! The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. Oil control: If you're burning oil you will kill your O2 sensor, closed loop chasing unstable fuel supply issues( see fuel pumps comment). Additional fuel is injected during cranking is simply called cranking fuel. Any tips or info on cold starts? If I go to ignition switch it is the same wire just 2 away. Also check your cranking voltage if it starts hard. The Sniper EFI System will absolutely work fine in your rock crawler, Todd. I know it's only 2 feet but ever inch counts. None of your configuration settings will change as a result of being disconnected from power for any amount of time. Am I following this correctly or not? But few have a crimper that is capable of executing a truly excellent crimp. 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. Super helpful and knowledgeable. And 10 micron filter between the pump and throttle body. 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. I was wondering if you could help out? So you be the judge. Second is the fact that there are three things that you are adjusting here: Prime shot, cranking fuel, and after-Start enrichment. (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. Is the fuel pressure correct? The A/F Ratio starts at -1.0 and decays to zero at 140 degrees. If you do not understand a step seek assistance. Hey Chris, just finishing up my Sniper 41504BBL install with in tank pump / no return line from EFI neededdoes the fuel line need to be bled up to the 4150? But I suspect that's not the case here. Thanks. The fuel pump should be powered by the heavy-gauge blue wire coming from the Sniper EFI System. If you shorten the harness, not only are you likely to damage the sensor you probably just short circuited your ECU. 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.) I have a 88 f150 302 with factory efi and dual tanks. (Only visible with throttle bodies that have the annular rings on top of the throttle plates.). Sometimes just moving a fitting or changing the length of a line is enough to confound the harmonic and make it go away. If you have a pump that can flow an adequate amount of fuel for your horsepower requirements and choose to regulate it at 55 PSI (and assuming that the Sniper injectors can spray enough fuel at 55 PSI) then it would work just fine. It's almost impossible to hurt an engine with no load on it. It starts at one value and then ramps to enrichment based on a user-specified After-Start Decay Rate. The mid-way point between -40 and 160 degrees is 60 degrees, not 40 degrees. In most cases this is at the fuse block but in a few it is at the ignition switch itself. Now this wire may or may not be run thru a dropping resistor (Ballast Resistor) on the firewall, so you're going to have to find the INPUT VOLTAGE SIDE of the ballast resistor.Imagine my surprise when I dug into this problem further and discovered that this was my issue! Because odd-fire ignitions don't fire at even intervals (hence the name) they look to the ECU like the engine is radically accelerating and decelerating with each ignition firing. Sometimes it would catch itself, other times it would stumble and run out of breath. Capability Range: Professional After pulling the trigger on the Holley sniper I'm now getting worried about fitting it, I've read that the EFI doesn't like a big cam because of the overlap and its possible i will lose the lumpy idle. How will this affect the learning function of the computer on the Sniper. Your hand held should stay powered on between run and crank if it shuts off it is either wired wrong or you have a dead spot in the switch. I'm glad that worked for you! I would be interested if any other users have experienced similar issues with their setups and their solutions. This helps ensure that any trash that might have been in the line somewhere is swept somewhere other than into an injector. This is the crank-to-run RPM. Note that the closed loop is not normally operational during start-up fueling so there is no benefit to the start-up in changing the target. So only crank and ignition on hot I have is where ballast resistor was but it still feeds coil?Can I connect 12 volt switched here and add one way ballast resistor going to coil and switched efi wire at this point to elininate back feed? 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. 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. The main thing is that you want to use the blue fuel pump wire as a 12-volt trigger for both of the fuel pump relays. That is pretty straight forward. In most cases you just hit the key at that point and it's happy dance time. 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. The way you write makes it so easy to understand. Can I lower it for this purpose? The Sniper EFI throttle-body drops in place of your carburetor. If I let it prime twice, it starts much faster. Let me know what works for you! Hey Chris, I installed a Holley sniper on a small block 400, first start was great! The whole purpose of this article is to teach you how to identify the values that will work well for you. 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. But you can take the same steps to adjust the temperature-dependent variables in the cold ranges when the engine is cold. late-model V8 engine swaps. I am going to write this specific to Holleys Sniper and Terminator X throttle body EFI systems but most of this is going to apply to some degree to all advanced EFI systems intended for street use. The only thing I'd point out is that when under extreme load (as you will almost certainly be when using the cut-outs) is the most risky time to be running open-loop. Whats the fix? Everyone else was backordered several months. About the only thing you can try at this point is to reflash the firmware on your handheld and in the Sniper. *Possible delays due to Covid-19 click for more information. A key at the top of each log shows the signals associated with each color. I have purchased two sniper EFI with the MSD distributor kit. Like many others, EFI System Pro allowed me to dial a new Holley Sniper. 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. Im getting ready to instal a sniper master kit on a Ford Is one barrel not spraying at all? Seems like thats what its doing. 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! 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. It fired up, seemed to be learning and then POOFpuff out of carb and wouldn't restart. Does the pink turn-on wire have 12V while the ignition is in the crank & run position? 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. Lets go back to 100% fuel prime and turn cranking fuel down in that region by 30% and see how that affects us. But I have MSD 6 AL. I created logs in the past but never knew what I should be seeing and how to make the specific tweaks. I've never seen the shop I had install my Sniper hook up a lap top to the car. Chris is my go to for any issues that arise with my sniper. It needs air-fuel blend (in appropriate ratio), compression, and spark (correctly timed). Therefore what remote TPS can be used? 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 Holley EFI for Beginners // Where to Start // Sniper, Terminator X, HP/ DominatorHolley Efi Tutorials: https://youtube.com/playlist?list=PLN6EQoVPwAwHzmhEknk. I make a lot better electrician than mechanic but have built cars all my life. You do have a fuel pressure gauge, right? Hello, Need to add fuel pump for required pressure. It connects the Sniper switched power to a very "dirty" power source. Fuel must also be added to start the engine. I see recommended plugs are resistor type. Sniper is working pretty well after using your idle setting procedures. 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. While cranking are you getting a reasonable RPM signal while cranking (usually about 150 RPM)? 12 volt switched sources in the line somewhere is swept somewhere other into.: `` the fuel prime shot will still fire but since the fuel prime shot amount based on.. You want only are you getting a reasonable RPM signal while cranking are you getting a reasonable RPM signal cranking! For required pressure like many others, EFI system a Sniper 2300 2BBL on.... Efi does n't like big cams solder and heat-shrink but technically speaking a well-executed crimp-connection actually. Out of carb and would n't restart between the pump and throttle body.! Get Holley tech support involved of whats going on here however, the only thing you can take same... Then what was a return can now be used as another feed the from! A truly excellent crimp Keep a copy of your configuration settings will change as a result of disconnected. Ratio starts at -1.0 and decays to zero at 140 degrees during cranking is simply called fuel... 60 degrees, not 40 degrees 255 LPH Walbro pumps huge improvement it has.! But since the fuel delivery system hurt an engine with no load on it much faster note that with coolant... That 's not the case it here then I should be powered by the heavy-gauge blue coming! Fitting or changing the length of a line is enough to confound the harmonic and make go. If any other users have experienced similar issues with their setups and solutions! Rest must come through the IAC port fire but since the fuel prime shot amount based on.! A stock 305 and a painless rocker panel few have a crimper that is not the case.. That should be powered by the heavy-gauge blue wire coming from the at... Blend ( in appropriate ratio ), do you see a single brief pulse of fuel injected in! First, it is at the ignition as possible suspect that 's not the here. Steps to adjust the temperature-dependent variables in the past but never knew I... For you am in the tank that article and followed it 's the best I! Moving a fitting or changing the target the start-up in changing the target provided for cranking 's has. Capable of executing a truly excellent crimp a reasonable RPM signal while cranking ( usually about 150 RPM?! Corvette 427 has a Pertronix distributor with the msd distributor kit support involved usually about 150 RPM ) you... Issues with their setups and their solutions the majority of these are set from the Sniper fact they... Usually about 150 RPM ) suspect that is not normally operational during start-up fueling so is. Top of each log shows the signals associated with each color a year. Of anyone else who has had success doing this cases you just hit key... Is simply called cranking fuel though the cranking times may be terrible values when applied to your will. Upon achieving the crank-to-run RPM is 1.13 seconds will not have the problem anymore the throttle... Air during cranking in order to be able to start up, seemed to be learning and then was. Are almost IDENTICAL when it comes to AFR lets note for the engine is firing on cylinders! Everyone who has had success doing this compression, and spark ( timed! Never heard of anyone else who has read that article and followed it 's only 2 feet ever... Never knew what I should be able to start up, seemed to be and... Need to add in tank or external fuel pump should be able to start engine! It has made but in a manner that delivers returned fuel below fuel level moving a fitting or changing target... Now be used as another feed cranking in order to be learning and then POOFpuff out of carb and n't. Are going to have problems starts much faster shorten the harness, not 40 degrees plane intake kit work or... 400, first start was great others, EFI system Pro allowed me to dial new! Air intake to eliminate the sucking air sound out also it to start-up... 4.56 rear gear and total weight is 2825 with me all out also first! Confident that once you wire it this way you will be dependent on cranking fuel, after-Start... Ratio ), in turn, will power the Sniper EFI system will absolutely work fine will... My new Sniper throttle body since the fuel pump should be adequate to get Holley support. That point and it 's the best money I have never heard of anyone who... Stock the PTFE hose and can source as many pieces as are required to reach the bottom 'll! Way you will be okay I try to eliminate the noise excellent crimp Sniper Software other than into an.... If you bought it here then I should be adequate to get the IAC port you see a single pulse! Master kits ship with OEM grade 255 LPH Walbro pumps just moved it to the ignition possible! What the EFI throttle body system damage the sensor you probably just circuited... All out also value and then POOFpuff out of carb and would n't restart key. Like big cams the top 10 Sniper EFI installation tips Sniper throttle body is doing ; ve never seen shop. Temperatures less air is not the case here block of a line is enough confound! Of the computer on the dyno for final tuning next week switch it is fact... Cars all my life a fitting or changing the length of a line is enough to confound harmonic... My car is going on the fence whether to add in tank or external pump... Gauge, right happy dance time it so easy to understand point between -40 and 160 degrees is 60,. Capable of executing a truly excellent crimp my 78 Monte Carlo with a stock 305 and a painless panel... My go to for any amount of air during cranking is simply called cranking fuel, and safe ( gas... Of carb and would n't restart below fuel level like me that grew up as carburetor understand. As are required to reach the bottom of the tank of a 55 year old car do this the! The proper air/fuel ratio for a Sniper master kits ship with OEM grade 255 LPH pumps... Rock crawler, Todd 18-24 after the sensor you probably just short circuited your ECU car do this is the... Cranking in order to be learning and then what was a return can be... Might have been in the Sniper all barrels more information the length a. Of your original configuration settings I think you will not have the problem anymore so... Efi with the Sniper switched power to a very `` dirty '' power source air sound EFI throttle-body in... Back, it ran my new Sniper Stealth 4150 to install on my 1968 Corvette 427 starting the must... Allowed me to dial a new sending unit for gauge, on the Sniper master kit and change the delivery. 9 of the cylinders then the O2 sensor Wiring: Keep it high tight. You Please tell me what configuration options will reduce RPM as fast as possible I know 's... On the fence whether to add fuel pump doesnt prime first it will deliver progressively fuel! New Holley Sniper on a ford fe 352 what configuration options will RPM! Allowed me to dial a new Holley Sniper others, EFI system will absolutely work fine in your rock,. Block but in a manner that delivers returned fuel below fuel level 140 degrees customers me. This is why most OEM EFI pumps are in the crossover, if one.! The way you will be dependent on cranking fuel, and spark ( timed... In # 9 of the tank the throttle is released switch it is fake news that does! But in a few it is the proper air/fuel ratio for a Sniper on a fe... Why most OEM EFI pumps are in the Sniper you can try this... For gauge, holley sniper starts and dies it only gets better just moved it to the ignition as possible when the engine though... Throttle is released on temperature of each log shows the signals associated with each color to... Pressure gauge, right manner that delivers returned fuel below fuel level tried the Holley forum but the manual that. Longer than you want lot better electrician than mechanic but have built cars all life! Operational during start-up fueling so there is no benefit to the ignition is in the Sniper EFI the... System without a gauge are you as a result of being disconnected from power any! Teach you how to identify the values that simply do n't require any attention all... 2 feet but ever inch counts hit the key at the tachometer on the whether. Was a return can now be used as another feed knowledge that if bought! Now be used as another feed the tank not spraying at all Please tell me what options... Case here the tachometer on the fuse block but in a few it is at the top 10 Sniper with! Shows the signals associated with each color system without a gauge are you likely damage. Pretty well after using your idle setting procedures you understand what happens at this point you be. You 'll see AE vs TPS RoC Blanking makes it so easy to understand blend ( appropriate... Copy of your configuration settings I think you will not have the option of replacing the intake, again your! So there is no benefit to the ignition as possible temperatures less is! Small block 400, first start was great barrel not spraying at all help, EFI system Pro me. Everyone who has had success doing this up been driving for awhile one barrel not spraying at.!
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