so simple check first, whats the fuel pressure? I put mine after the collector only because I have a new exhaust and muffler going in and Ill use a weld in bung and placement will be different. They have mods that help. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Ref: https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/I heard of the new Sniper EFI from some chatter on OffshoreOnly.com. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. I am a competent mechanic and I have checked all the usual suspect items. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. test the sensor.. for a basic pass/fail of the sensor. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. This is the 02 sensor adapter I used. They have been working out well for a few years now. Doesn't look like it will have an O2 sensor. Sensors: Fitting: Threaded O2 . I'm 3" down from the bottom of the flange to center of bung. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Menu. Mine is right where Steamers is, and works well with my AFI TBI. May 19, 2021. The plan is to 'learn' a fuel\Timing curve with a closed loop. If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. - You are currently viewing the forums as a GUEST. Sort. Running? Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a "criss-cross" pattern (60-80 in.lbs.). Sniper EFI 4bbl Marine. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. but I'm finding when running engines with holley sniper kits the the engines are very eratic ,the air fuel numbers are always changing drastically from one pull to . 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. Make sure to put anti seize on the threads. Specs. . Mike. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Holley EFI requires several pressure inputs in order to run an engine. EFI System Pro also has a good bit of tech info on their website. I wanted to let you all know, I have modified a mercruiser Cool Fuel Gen 3 module(mounted on the engine) to provide fuel to a sniper. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Followed all the instructions to the letter. Stay up to date with the latest releases, events, promotions and more. We use cookies to enhance your experience while using our website. Copyright 2022 Holley Performance Products, Inc. All right reserved. If it's working to prolong the life of the sensor in the AEM Wideband kit then there is no reason to believe it wouldn't work with any other sensor. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. *Possible delays due to Covid-19 click for more information. And it is timing that is equally critical to best performance and fuel economy. Stock manifolds? May 1, 2018 They want you to angle it to keep it from fouling. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Register now for free! As a follow up, I ended up using an eBay type anti fouler elbow for the O2 sensor to try and get it out of the water in the manifolds. A third option would be to run your EFI system without an O2 sensor at all. The wiring was a bit of a mess. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Add to Cart . This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. A replacement clamp on would be an easy change out. Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. Has been since the 80's. I really dont want any issues on the whitewater lol YES! (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Depending on how fast you want one, there are plenty out there: The Cross ref numbers on the Holley forums and the Net is a Bosch 17025. I am happy with Holleys no hassle replacement of the parts. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. I installed a holley sniper kit. Phil said water would still get up over the snail and knock out the sensor. When either of these operating temperature ranges is exceeded, the sensor can no longer be . I don't have enough experience with marine applications to know exactly what it will take to solve this. The sniper fit perfectly on the intake. It may not display this or other websites correctly. Register now for free!) Super helpful and knowledgeable. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. The in tank pump is quieter, will normally run cooler and should last longer. Welcome to Club Cobra! looking at doing the same. OP, the Edelbrock system looks to use the same basic sensors as the Holley sniper system: TPS, MAP and O2, plus a few supporting sensors. 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. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Purely coincidence about the '2300' number. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. 10 min read Video. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. It will not fit on round or oval risers without a suitable flat area. Also the progressive link. And who can blame them? For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Wondering how you are progressing with this? . Once the tune is complete, the O2 sensor can be defeated or . Installed the sniper/MSD combo on my mildly built 460 KEM. I want to register an account for free right now! I've installed several of these adaptive EFI's on cars with great success. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Replacement Sniper and Terminator X O2 Sensor. Wideband Oxygen Sensor Extension Cable. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. But MAP sensors are very easy to physically implement and are inexpensive. The first option is to just buy the injector body and the controller with the wiring harness and sensors. 2 Reviews. Distributor and ignition box? The Fora platform includes forum software by XenForo. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Product Q&A . All times are GMT-6. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. Q1. Maybe going all the way to the front is the way to go? Wideband Oxygen Sensor Extension Cable. The throttle body has a built in fuel pressure regulator set at 58.5 psi. From there, our highly trained factory refurbish technicians flow the original fuel injectors. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. p.s. Find a lower price anywhere and we'll beat it by 5%! As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Now the lower cost Holley Sniper advertised for March 31 2016. Holley EFI Usb/Can Harness, Sniper Tbi. If you're thinking that you've read everything above and are ready to toss the carb on your marine engine then take this handy quiz to make sure! 100% identical. Not sure how well the sensor likes being that close to the port. The new throttle response was significant,fuel saving and gave me a turn key cold start.Still I can't have an idle speed under load and a turn key warm start. Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! 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. They are the only ones got me a holley usb to can cable fast. For a better experience, please enable JavaScript in your browser before proceeding. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Thanks guys. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. But you have to get it tuned. It's fast, simple and absolutely free. I am a competent mechanic and I have checked all the usual suspect items. A forum community dedicated to performance boat owners and enthusiasts. The engines are rated at 170 hp each. Capability Range: Moderate I have a boat with twin 3.7 Mercruisers. 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. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. I have searched thru the forum as much as I can, with not much luck. I have tried several different settings to get it going, no luck. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? Part# 534-199. Install the throttle linkage to the Sniper EFI throttle body. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. 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. Find a lower price anywhere and we'll beat it by 5%! Do you offer a USCG fuel pump kit? Got a picture? Welcome to ClassicBroncos! Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . Everyone raving about customer service is telling the truth! It turns out that the loading generated a propeller in the water is significantly different than wheels on pavement, so much so that the map has to be tuned differently. Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Each engine has the Holley marine 2 barrel carburetor. This page was generated at 08:35 AM. The fuel lines and fittings are 3/8s with 8AN fittings and everything on the 60 requires 5/16 fuel line with 6AN fittings) Holley Sniper EFI 550-849 Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish. Car runs perfect . 2023 Holley Performance Products, Inc. All Rights Reserved. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. I have searched thru the forum as much as I can, with not much luck. RPM going up and down , miss firing and backfiring. That's great--we look forward to your results! It flows 850 cfm and can support up to 650 horsepower. The ones in the Bosch box come without warranty. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. I know from some of the other posts, there have been WBO2 sensor issues. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Categories. The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. Staff Writer. Fuel economy went from 12.5 to 13.5 gph to 10 gph. Runs like a champ now. Holley recommends a 3/8" fuel supply line. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Advanced throttle body injection systems capable of transmission control and more. When I went to Holley HP, I found an adapter by Innovate that is designed to draw air out the exhaust stream and away to the O2 sensor. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style. Why? Holley EFI has the solutions you need to get your project up and running better than ever! The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. EFI Systems based on Holley's world-class Dominator and HP ECU's. Full product line and accessories at excellent pricing. Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Anti-Seize pre-applied to sensor threads. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. I did--- Save your money and piece a fuel it together. Have to replace head gasket. O2 sensor placement is critical for getting your engine to read the oxygen in the exhaust correctly and can directly impact the performance of your new EFI installation. Was in marine engineering for years. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. KAYAK searches hundreds of travel sites to help you find and book the hotel deal at O2 Hotel Taipei Main Station that suits you best. 02/25/2020. Full time feedback from the sensor is what the computer uses to refine the fuel table. :-), I started using OMC and Volvo Penta pumps for my conversion. 3. 5. I purchased the Holley HP MPFI system and went to the lake with it. 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.