holley sniper efi display mount

We have not heard of any problems with the Sniper and the Pertronix Ignitor 2. That's not the case here is it? Don't let that get the best of you. Sniper EFI Releases new Stealth 4150 Models! 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. 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. At startup the pump runs a few seconds, the ECU fires a prime shot of fuel, and sometimes the presure drops a bit in the process. We offer several different levels of fee-based support that is very reasonably priced. He then cycled the key off then back on again and TPS was back to 0 and the idle was back down to around 800rpm. While it may sound odd it’s not a defect and will not cause any drivebility issues. The resulting O2 sensor failure is damaged not defective. Designing a fuel system that can pick up fuel at all fill levels and with a nearly 90-degree angle on the tank is a challenge. Fits Holley part number: 553-115. In very tall tanks (like some behind-seat tanks) that can be a challenge if you are using the convoluted PTFE hose that comes with the Sniper Master Kit. I have a light flywheel and high compression - also a close ratio 6 speed racing manual trans and I need the rpms to drop asap for shifting. 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. If you have any exhaust leaks between the combustion chamber and 18-24” after the sensor you are going to have problems. Mechanical Fuel Pressure Gauge Cheers Darren. I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. What do I need to do to rectify this issue? Much appreciated! Holley EFI Sniper 3.5" Touchscreen Mount Steering Wheel Terminator Dash 553-115. For over a century Holley has driven the cutting edge of fuel-system design. Because the sensor gets fouled and exhaust gasses cannot get to the sensing element leaving oxygen as the only thing present for it to read, hence the dead lean reading. 2. 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? Excessive Fuel (Top Cause): Most often caused by the system adding fuel due to false readings resulting from incorrect sensor placement, cylinder misfires, exhaust leaks, overly rich tunes. We've partnered with Holley to offer their master kit along with our own Holley 350/500 to Weber mounting . :-) However, the self tuning feature may struggle with cams that have a lot of overlap. Free FAST Shipping, Free Returns, Expert Tech Support. *Possible delays due to Covid-19 click for more information. Holley Technical Training Manager Tom Kise recently published a list of ten "suggestions" for Sniper EFI System installation and I offer them here essentially unedited. Be sure to watch the video embedded at the link above. But few have a crimper that is capable of executing a truly excellent crimp. EFI is turned on. 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. I figured it would be minimal. If it cranks better then you know you're getting too much fuel. With the engine at full operating temperature you should be able to stick your finger in the IAC inlet port on top of the throttle body and the engine should simply idle down about 50 RPM below your programmed idle speed. Holley set their sights on a goal; to offer an EFI conversion kit for smaller/2 barrel carbureted engines that is simple to install and affordable. Holley EFI Sniper 3.5" Touchscreen Mount Steering Wheel Terminator Dash 553-115. Try cranking immediately upon key-on--before it has a chance to prime. I would add a 12v-switched relay to power your Sniper. to the same number as 4.) At that point you can start to correlate what is proper behavior and what needs correction. Yes, there should be a steady flow of fuel out of the return. 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. Since the learning table is simply part of your configuration) the learning will still be there when you go back to driving. Pinched or Burnt O2 sensor Wiring: Keep it high, tight, and safe. Enable a 1D table3. I still have the lound sucking air sound. 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. FE 390 that currently has a Pertronix distributor with the Ignitor 2 module. Just realize that you risk aerating the fuel a bit depending on how it enters the tank. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. 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. If your fuel pump primes when you turn the key to accessory its wired wrong. The Holley EFI Digital Dash measures 7.5" wide, 4.625" tall, and 1" deep which makes it a compact, customizable dash for use in a variety of motorsports applications. $9.99. I have just finished installing my Holley Sniper to my 67 Camaro. Well, the sniper 4150 has a dual drilled flange to physically bolt on to spreadbore applications where the stealth does not. There must be an option that has been found to work. what is the proper air/fuel ratio for a sniper on a ford fe 352? Therefore what remote TPS can be used? This is why most OEM EFI pumps are in the tank. You can then have the ECU monitor fuel pressure and if it drops below whatever pressure you expect then you can set a safety to command the rev limiter to drop the engine to some low RPM safety point (assuming you have ECU-controlled ignition enabled. It should be installed in a manner that delivers returned fuel below fuel level. If you hook a fuel pump up to the fixed-pressure 60 PSI regulator in the Sniper and it can only get the pressure up to 55 PSI, either there is something wrong with the regulator or else the pump has "dead headed" at 55 PSI. SNIPER EFI INSTALLATION INSTRUCTIONS Congratulations on your purchase of a new Sniper EFI Throttle Body System built by craftsmen to exacting standards in our Bowling Green, Kentucky facility. Brand New. Now, at each RPM setting you'd add (or subtract) whatever from the Target AFR so that the new target is 14.0:1. Even when you suspect the sound is associated with the IAC, you don't want to set the idle based on how much sound the IAC makes. Bolt-on carburetor style EFI for your classic car or truck. Good point. Chris, this is going to be an easy one. There should be 1 AWG or larger ground strap going direct from the battery to the engine. Holley just brought EFI within range - introducing Sniper EFI! 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. I have two questions at this time: 1. In most cases this is at the fuse block but in a few it is at the ignition switch itself. Increase that to 15 to start. It’s economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! 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. Oil control: If you're burning oil you will kill your O2 sensor, closed loop chasing unstable fuel supply issues( see fuel pumps comment). No need to mount an external fuel pressure regulator! 0 throttle body flange side mount top. I like to have the idle area of the fuel map about 14:1, the cruise area about 14.5:1 and the WOT area about 13:1. O2 Sensor Mounting: The O2 needs to be mounted 6-8” after the merge in the header collector.Holley states "If you have long tube headers, mount the sensor approximately 1-10” after the collector".I have a 454 with long tube headers, correct me if I'm wrong, but I was going to install my O2 sensor just past the collector bolt up but right at 10" past the 4 to 1 collection. The Sniper instructions don't cover the use of these tables, but a dedicated user can read the instructions for a HP or Dominator EFI system to get up to speed. Overall, I am very impressed with the Holley Sniper EFI system. These units offer superior throttle response and WOT power over the carb—and you will likely experience increased fuel economy. I was thinking of using the clamp on sensor mount, but there is no straight section close to the manifold I think will be compatible with that setup. Can I use this for the return.Thanks for the help, The integrated Fuel pressure regulator simplifies plumbing/installation! I have been looking at all efi units and I keep coming back to the Sniper. I've been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking issues. The problem isn't the 55 PSI. Sure. 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? Do you see an issue with this? AEM’s CD Dash Holley Plug & Play CAN bus Communication Harnesses (PN 30-2214 for Holley Dominator and HP, PN 30-2221 for Holley Sniper) eliminate the need to manually wire a CD-5 or CD-7 Carbon Digital Dash Display to a Holley EFI system. The resulting resistance can burn up fuel pumps, wiring and relays. And 10 micron filter between the pump and throttle body. Don't hesitate to call, nights and weekends included.). The Sniper EFI master kit contains the most complete EFI fuel system on the market. This direct-fit Sniper EFI Kit offers a stealthy "carburetor" appearance plus the fuel economy, throttle response, and overall performance gains of EFI. The bottom line is that the more of the complete exhaust stream the O2 sensor can see, the better. Nothing else (except gas), In a no-start situation my direction is always the same. Set the table type to Air/Fuel Ratio Offset4. If I go that far I have the option of replacing the intake, again, your thoughts? Can I lower it for this purpose? MAIN POWER AND GROUND need to go to the battery. 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? Every Sniper EFI System is 100% tested before it leaves our facility for “bolt on and go” performance. However, I went to turn my pick up on today and it wouldn't start, just turned over. But never ever forget there is a second learning going on--your own. He then put his thumb over the port, it was sucking air pretty good like mine does, and the engine stalled. 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. Fast and Easy: How to Install a New Holley EFI Dual Sync Distributor, "Bad Bart" Tobener Enters the 7-Second Zone. Not some generic pump as some have speculated. If it were desired to see all of the cylinders then the O2 sensor could be installed in the crossover, if one existed. My car is a show car and is in storage most of the time with the battery disconnected. Look no further than Holley for the Super Sniper 4150 EFI systems featuring 8, 100LB/HR Fuel Injectors capable of supporting up to 1250 HP on forced induction or dry nitrous applications. 2 INTRODUCTION & SYSTEM REQUIREMENTS . Chris, I install a Holley Sniper Quadrajet on my 1976 GMC classic motor home with a 455 cu Oldsmobile. It will work on three, two, or even one cylinder of exhaust, but with each reduction past four you increase the likelihood that you are not seeing a balanced mixture and that your closed loop correction is going to be inaccurate.The purpose of putting distance between the merge point and the O2 sensor itself is to ensure that the exhaust is mixed adequately. To ensure that you select the correct system for your application, we've built this easy to use tool to help you along the way. This T-shirt is yours for $0.00 with your Holley Sniper EFI System purchased from EFI System Pro. The domestic aftermarket performance world has been abuzz about the latest low-cost EFI systems, one of which is Holley's new Sniper EFI. Adapting A Sniper EFI System To A Vintage Volkswagen, Putting The Sniper EFI Dual Plenum Intake To The Test On The Dyno, How To Install A Holley In-Tank Retro-Fit Fuel Module Kit Into Your OEM Fuel Tank, How to Make 900+ Horsepower with a Blow-Through Holley Super Sniper EFI, How to Replace your Mustang Autolite 1100 Carb with Holley Sniper EFI, How To Build A Custom Timing Table - Sniper EFI, How To Email Datalogs and Global Files for Holley EFI and Terminator X, Sniper EFI Initial Startup and Troubleshooting, Sniper Dual Plenum Fabricated Intake Manifolds for LS Engines. Brand New Holley Sniper EFI Self-Tuning Kit, Gold Ceramic Finish, Holley Sniper 2 Barrel Fuel Injection Conversion, plus Handheld Display (Part #550-851) Holley just brought EFI within range, introducing Sniper EFI 2300! I'm worried that the engine will stall at idle. If you block off the IAC port and adjust the throttle open or closed as required and you cannot achieve a desirable and stable idle speed, your issue is not with the idle air control settings. I can't find a good spot in the fuse block, I don't recommend this. I decided to buy from EFI System Pro hoping for better customer service than, say, Summit or wherever else. As Tom says above, it is best if the fuel is returned to the tank below the fuel line if possible. Use of the I/O harness will also allow two ground switched outputs from the dash. A throttle linkage extender and a progressive linkage kit. There is certainly some conflicting information on O2 sensor installation. Only thing I’m really looking for is an AFR of 14.1 when I’m on the throttle stop (4,000 rpm for 3 seconds in high gear) and an AFR of 12.8 to 13.0 everywhere else. Hello, At least not right away (after time-delay set in relay). This circuit shuts off during crank and will obviously cause problems. Hello Chris. Fortunately, Holley has another product that can solve that: Hydramat.. Hydramat is not inexpensive but you won't believe what it can do. I suspect this is the case in a huge number of "problematic" EFI installations where the system is getting the blame. Hur du väljer ditt EFI-system. 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These full-featured throttle bodies are easy to install, can support a … If you have RF and or EMI issues you need to correct them. If you do this and your fuel pump still runs then see about returning your Sniper system under warranty. And the less correction you do until you understand that---the better! Do as I Holley says? But as you go farther back, it only gets better. Depending on your application, this is also the time to install your throttle bracket and transmission kickdown brackets. Read the instructions and Follow them. 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. AutoTech EFi tend to hook its systems into a Holley HP multipoint computer like 67sixstang's. This install is on a 2000 Ram 1500 2 door short bed full size truck. Thanks. Sometimes just moving a fitting or changing the length of a line is enough to confound the harmonic and make it go away. To be 100% honest I was having an issue prior and flooded it. 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. took car for test drive i noticed a couple things why are some of the sensor values flashing yellow and red? Eventually I might choose to have the ECU control timing, but I need to consider the Terminator-esque repercussions before going down that road. All it knows is what it sees in the pipe. That means at or above 55 PSI it is capable of flowing ZERO fuel. In my experience startup fuel tends to be too much. Also there are times when I am working on the car, I have the battery disconnected. The runner length and tapered cross-section design will perform well for a wide range of engine combinations. 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.

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