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On EFI systems such as Holley's Sniper, all of the EFI sensors (except for the O2 and coolant temperature sender) are mounted snuggly in the throttle body. Put an end to cold start issues, hesitations, vapor . Brand: Holley EFI Emission Code: 5: Material: . The reason I say this is that nowhere in this discussion is the fact that none of these systems are are handling the timing on the fly. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. Thanks for the compliment--we look forward to your feedback! blue doberman puppies. I'm about to embark on the same type of project. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. I was thinking aluminum heads would run it up closer to 5,000 rpm. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. The test run was great, they have never run so well even when they were new with carbs. Part# 534-199. Find a lower price anywhere and we'll beat it by 5%! Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Part # 554-155. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. FWIW, I called Holley to confirm the part number and they say the Bosch part number if 17212 (also available on Amazon for $64.78). It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Followed all the instructions to the letter. looking at doing the same. Maybe my manifolds leaked the inside between the snail and the log?? Thanks again for writing! Then having an experienced tech from a local dyno speed shop ride in the boat as you run the power up and down, making notes. #1. No matter what I do, it will not start. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. I just discovered that was the case with my Fitech. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Holley EFI Sniper O2 Sensor Install - YouTube With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. Thanks for that, Danny. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. 5. That sounds like one solution. I thought the clamp on style mount was a good idea in case the threads got buggered up when a sensor change might occur, and the threads are rusted up by then. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Capability Range: Advanced Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. Also in Tools, Shop Equipment & Chemicals, Cataclean - Fuel and Exhaust System Cleaner, Cataclean Diesel - Fuel and Exhaust System Cleaner, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets, Holley EFI CAN to USB Dongle - Communication Cable, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Holley EFI Terminator X Wideband Adapter Harness, Earl's Oxygen Sensor Weld Fitting (Weld Bung) - Steel. Holley EFI Usb/Can Harness, Sniper Tbi. Q1. This was for MPFI. Here is one on start up tuning. excessively rich mixtures), Mechanical shock (e.g. I am looking for a TBI with full sensors, mainly atmospheric for Sept and Oct and a Idle Air sensor for warm starts.I welcome your thoughts.Regards, Plug into the coolant temperature sensor. You have to one big hole in the riser, then you reach the cooling water, and one little hole in the next part of metal: now you reach the exhaust gasses. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. But this also makes me wonder what you did for the O2 sensor. Yellow Cold! Since your existing low-pressure fuel system is not going to work with the Sniper EFI System this puts you in the unenviable position of choosing between USCG compliance or EFI. Wideband Oxygen Sensor Extension Cable. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Is this a good upgrade? Have to replace head gasket. O2 sensor failure on a Holley Sniper EFI - YouTube If this is a first time effort, find a tuner in your area with marine experience. What you are able to accomplish with a Sniper is done exclusively through the setup wizard application on the 3.5-inch handheld.The Temrinator is designed to be set up with it's own setup wizard on the same 3.5-inch handheld display--but since it has a stand-alone ECU, it can also be fully programmed via the Holley laptop software. Installed the sniper/MSD combo on my mildly built 460 KEM. I installed the adapter and elbow so it's at an angle above the entry point. Ran about 5 seconds and died. Tune the delay relay timing to just miss the prime shot.For cold starts, a simple push-button or switch "choke" override to power the relay during prime would provide it. As always, your results may vary and batteries not included. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Price Point: $$$. Holley sniper help!!!! | ClassicBroncos.com Forum Sniper EFI Releases new Stealth 4150 Models! Everyone else was backordered several months. YES! Have you visually verified that all your injectors are spraying? I will get a new 02 sensor before I swap back to the orange box. Do you understand that no USCG-approved aftermarket EFI fuel system (including fuel pump, lines, filters, adapters, and hose ends) exists, that installing unapproved components on a boat will make the boat out-of-compliance with USCG regulation and could result in financial loss and legal liability (and that you release us from any liability by proceeding)? Holley EFI 554-155 Holley EFI Oxygen Sensor I was mocking it up at the time. To take advantage of all the site features, please take a moment to register. There can be leftover debris from manufacturing that have been washed down and are now clogging one. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. EFI EFI kit electronic fuel injection. You will still get some water on the engine side of the snails, mainly at low Rs. Holley Sniper Marine EFI | Bloodydecks Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Hello Chris,Ontario's boating season is about to launch for another year.Do you have any good news to add to your above article, any new marine friendly TBI products?In '08,I installed a Holley 21-700 TBI with the o2 mounted in the manifold to Holly specs. Holley Sniper first start No o2 sensor - YouTube A 90-degree V-6 has three shared crankpins set 120 degrees apart. Menu. I installed it without O2 sensor, adjust on the fly. Much of the system is encased right inside the throttle bodyand that includes the ECU. Essentially, when I push the clutch in and ease on the brakes to coast up to a stop light, the AFR goes lean (18:1 or so) and the engine stalls. How To Properly Place and Install an O2 Sensor - Holley The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. For a better experience, please enable JavaScript in your browser before proceeding. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Capability Range: Advanced Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . Do you recommend in-tank or external fuel pump? This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Taking a look at the holley manual I am thinking about drilling and tapping the front exhaust port on the log for the O2 sensor. It just means that if you are thinking you'll install this, crank it, and pull away from the dock with complete success you might be in for some disappointment. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. I think I could run more boost but it's a real hand full right now. EFI System Pro had everything I needed for my EFI upgrade. PS, Once someone has a good 270/350 tune, everyone can use it. May 1, 2018 They want you to angle it to keep it from fouling. Capability Range: Moderate Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. The fuel pump question is the tough one. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Everyone raving about customer service is telling the truth! Register now for free!) The O2 sensor burned out immediately. Below are the most common sensor usages in a Holley EFI system, however pressure transducers can be applied to any form of pressure in an automotive system, from oil pressure, to exhaust back pressure, and the data gathering usages in racing can get quite creative. We may earn a small commission from affiliate links and paid advertisements. Did a test startup on my new sniper by running the power wire to battery + and not using the o2 sensor.I also capped off the regulated return line with a hos. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. JavaScript is disabled. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. This combines the Sniper EFI Self Learning Throttle Body, with an easy to install In-Tank Retrofit Returnless Module, 20 ft of Earl's Vapor Guard Fuel Hose, and the required fittings. 3. I have a 74 bronco, 302, mild cam. And who can blame them? Capability Range: Advanced 02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. They have been working out well for a few years now. I did--- Save your money and piece a fuel it together. Increasing efficiency is always a good idea. Stock manifolds? This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Has anyone run an O2 sensor in an EFI on a marine engine? Only a few hours on the motor but so far so good. $43 per night (Latest starting price for this hotel). Holley EFI has the solutions you need to get your project up and running better than ever! Look at the bottom.. So much it could be. Sniper EFI 4bbl Marine. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. They are about 4 inches long, in-line between the log and manifold. Holley Sniper Efi - Mean Chicken Jet Boat Forum Right now I'm just using the AEM Wideband sensor to monitor Air/Fuel ratio but hope to use it in an EFI system soon. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. With the sniper as long as you locate the o2 sensor where it gets good feedback and stays dry long enough to get a good tune you could lock it so even if the o2s get wet it still runs good. Holley EFI Oxygen Sensor. The Holley Super Sniper High Performance EFI kit comes with a coolant temperature sensor and an O2 sensor, both of which must be used for the EFI to work properly. Previously, none of Holley's throttle body injection (TBI) systems, such as the Terminator EFI were USCG approved (even though the HP and Dominaor ECU's themselves are.) Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. Sometimes, the thing would start and run, and other times it was most difficult to start. Holley EFI requires several pressure inputs in order to run an engine. USCG approval is certainly worth careful consideration, as being on a boat that catches on fire is even more serious than being in a car that catches on fire. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. away. running holley sniper without o2 sensor - dowdcreative.com i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. For now I have a genuine bosch O2 and Standard Automotive TPS installed. (REGISTERED USERS DO NOT SEE THIS POST/AD! Now the lower cost Holley Sniper advertised for March 31 2016. A forum community dedicated to performance boat owners and enthusiasts. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Add To Cart. Here's the pic of the location with my header. Capability Range: Moderate But it is going to be a little tricky. I don't have enough experience with marine applications to know exactly what it will take to solve this. Staff Writer. It's fast, simple and absolutely free. Fine tuned the timing to 12-15 degrees. You'll also notice that the firing order is 1-6-5-4-3-2. Stay up to date with the latest releases, events, promotions and more. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Thanks guys. Phil is right. Anything else is going to be a frustrating recipe for for failure. Followed all the instructions to the letter. Other? 29. 2023 Holley Performance Products, Inc. All Rights Reserved. They have mods that help. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). I will keep the replacements as spares. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. What I installed on the motors was the Holley HP 19lb Holley Injectors the Holley 522-198 duel sync distributors with the MSD Digital 6A and the MSD Blaster 2 coils. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. Free ground shipping regardless of order size! Top 10 Sniper EFI Installation Tips from Holley's Tom Kise I really dont want any issues on the whitewater lol All sensors are tested to ensure they accurately report critical engine data to the . . I would prefer to run this brand new Holley EFI system in a closed loop, not set the fuel map, and use the O2 sensor as only a sensor. Full time feedback from the sensor is what the computer uses to refine the fuel table. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. Each engine has the Holley marine 2 barrel carburetor. The original Holley Sniper instructions are available on the Holley website if you have misplaced them.