I don't have enough experience with marine applications to know exactly what it will take to solve this. Sniper EFI 4500 Marine. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Stock manifolds? Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. For a better experience, please enable JavaScript in your browser before proceeding. Late to the party but here's where mine are installed. If I am reading your post correctly you are using two separate o2 sensors when using headers ? *Possible delays due to Covid-19 click for more information. 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. Runs like a champ now. They have mods that help. We also use content and scripts from third parties that may use tracking technologies. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. The World's largest Everyone raving about customer service is telling the truth! This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. quick fuel. 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. 02/25/2020. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Not sure how well the sensor likes being that close to the port. looking at doing the same. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . The engine floods and it is embarrassing when leaving a lock. (If I am incorrect I heartily invite your comment at the bottom of this article!) If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. If this could be disabled it would be much better. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Precisely Adam. Holley EFI Oxygen Sensor. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Adam. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. $132.95. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. Distributor and ignition box? - You are currently viewing the forums as a GUEST. Increasing efficiency is always a good idea. . Capability Range: Advanced You must log in or register to reply here. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. You are using an out of date browser. Thanks for the heads up. 4. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 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. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Then they had it repaired and back to me in 5 business days. Warranty Information. The truck started fine after install, and ran down the road ok. Register now for free! Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. It is possible for the ECU to have an internal failure that can kill O2 sensors. Could show a lean condition when in fact it really isn't. They are the only ones got me a holley usb to can cable fast. Staff Writer. If this is a first time effort, find a tuner in your area with marine experience. It flows 850 cfm and can support up to 650 horsepower. JavaScript is disabled. Can more detail be provided? Marc, you don't mention which system you installed but the Holley systems are fully configurable. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I've installed several of these adaptive EFI's on cars with great success. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. Thanks for the feedback on this adapter, Donald. 3. Great Article. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Your talking flames at that point, and it will definitely have an effect on the reading. 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 hose, clamps, and chamfering bit.In the settings I chose closed loop disabled (set to open loop) and also set learn mode to disabled. My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. Other countries likely have simmilar approval processes for marine engines. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Much of the system is encased right inside the throttle bodyand that includes the ECU. Yes, this is an old thread, but it's an old unit. What is your fuel pressure at the carb during crank? Full product line and accessories at excellent pricing. 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. The Sniper EFI throttle-body drops in place of your . 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. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Use a return fuel line. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. away. 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. Some of the landlubbers who are reading this may not realize that many inboard engines utilize what is called a wet exhaust, pushing the water from the engine block into the exhaust and then back into the lake/river/sea on which they float. Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. My bet based on longer pump run, to make pressure, you have a leaking injector. I know from some of the other posts, there have been WBO2 sensor issues. 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. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. The Sniper EFI throttle-body drops in place of your . The original Holley Sniper instructions are available on the Holley website if you have misplaced them. For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. The spark must be manually tuned. Wideband Oxygen Sensor Extension Cable. 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. Stay up to date with the latest releases, events, promotions and more. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. If he wants to run in closed loop and have the system adapting to conditions at all times, the minute he fouls he is dead in the water. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Supports up to 650hp with Four 100 Lb/Hr Injectors! Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. The throttle body has a built in fuel pressure regulator set at 58.5 psi. This really applies to any O2 sensor regardless of EFI system. He is a wizard, might be able to give you some pointers, will ask you what version of the software you are on, whether you're running the progressive adjustable linkage, etc. That's great--we look forward to your results! For the most part, the small harness is plug-and-play. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. running holley sniper without o2 sensor - dowdcreative.com Any word on this? Free ground shipping regardless of order size! *Possible delays due to Covid-19 click for more information. Jun 7, 2021. Was in marine engineering for years. If you are not running the latest software stop guessing and go download it. The Tech Tips and discussions are also great! Ordered another dominator Bosch from Holley and it matches perfect. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Copyright 2022 Holley Performance Products, Inc. All right reserved. It could be an instant fix. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. My boat is still in winter storage. Holley Sniper EFI Returnless Master Kit - Black Ceramic Good luck to all. Maybe my manifolds leaked the inside between the snail and the log?? After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. Full time feedback from the sensor is what the computer uses to refine the fuel table. PS, Once someone has a good 270/350 tune, everyone can use it. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. 2. running holley sniper without o2 sensorplymouth township mi police scanner. Each engine has the Holley marine 2 barrel carburetor. . Finally, do you also recognize that the self-tuning feature of the Sniper EFI may not result in an acceptable configuration for your boat and, as such, may require you to seek professional tuning? I will keep the replacements as spares. Holley EFI requires several pressure inputs in order to run an engine. Ran about 5 seconds and died. test the sensor.. for a basic pass/fail of the sensor. Attempted to make a parts run in my 1990 Third gen Chevy Camaro with a small block chevy 350 with flowmaster mufflers.I believed the issue in this video to b. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Dec 28, 2016. About your only location is in that short area from the log to the port face. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. It may not display this or other websites correctly. I'm 3" down from the bottom of the flange to center of bung. I have a 74 bronco, 302, mild cam. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. Why? Advanced throttle body injection systems capable of transmission control and more. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? so far so good love the smooth power and easy starts. I will get a new 02 sensor before I swap back to the orange box. Is Holley working on a complete marine package or planning to in the future? 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. 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. What Is Pinion Offset, And How Does That Affect You? Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! The in tank pump is quieter, will normally run cooler and should last longer. JavaScript is disabled. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. Part# 50-5009QFT. I upgraded from terminator x Maxx to dominator.. bought a 2nd o2 sensor kit with Bosch sensor and used an off the shelf Bosch I had been using with terminator. Holley Sniper O2 sensor replacement. Look at the bottom.. No one cares about your buddies old antiquated garden hose technology. 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. Followed all the instructions to the letter. Did you use the Holley fuel pump and have you had any issues with it? I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. It's a compact HP pump and cooler assembly. It doesn't even mean that you can't do it. If you call, they usually let you put in your name and they get back to you. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery. May 19, 2021. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. You'll also notice that the firing order is 1-6-5-4-3-2. CTS (Coolant Temperature Sensor) - Reads engine temperature. Conditions when closed loop o2 should be turned off. Even though you now have the USCG-approved Sniper EFI System as an option for your new EFI System you're not quite out of the woods yet. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? . This requires removing the plug with a breaker bar, and using a 1/2 NPT to 3/8 NPT adapter to mount the Sniper sensor. Innovate Motorsports HBX-1 Bung Extender. 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. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. Holley Sniper Efi - Mean Chicken Jet Boat Forum The plan is to 'learn' a fuel\Timing curve with a closed loop. Bolt on 4150 Flange Carburetor Replacement. Holley Sniper EFI Self-Tuning Kit - Shiny Finish, Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI Self-Tuning Kit - Classic Gold Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. It looks like another season has come and passed by without the answer you wanted on this.I am impressed that you made the leap into marine fuel injection but you have experienced the same problem that everyone else who has tried this has faced. My hand is holding the connector to the sensor. If you have a manual tranny starting off without squealing the tires can be tricky because all four barrels open up at the same time. Welcome to Club Cobra! A 90-degree V-6 has three shared crankpins set 120 degrees apart. 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. 5. RPM going up and down , miss firing and backfiring. 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. I've seen O2 sensors in water jacketed headers that have worked fine for years. Bolt-on carburetor style EFI for your classic car or truck. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. #1. Jan 20, 2019. The Sniper will do that. When problem-solving this type of issue, consider when and how you could use a work-around. I had questions on the suggested "Marine O2 Sensor Adapter" from Howell EFI (https://howellefi.com/product/adaptor-o2-sensor-for-marine-use/), but when I look to the pictures, I understand how it will work. Sep 14, 2021. Troubleshooting Holley Sniper that hesitates on acceleration i thought about it, but after $3400 on an EFI alone and an entirely new rigged boat Im having a hard time forking out another 2000 for an exhaust when I may just do an open loop My buddy machined up a set of spacers I sketched out for him. Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette An O2 sensor is used when converting an engine to fuel injection and wanting to move from an "open loop" system to a "closed loop" system. 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 . You should then have at least 18-24" of pipe after the sensor. EFI is the wave of the future. You shouldn't feel too bad about that lack of knowledge, because many boat owners either don't realize that the moisture present in their wet exhaust manifold will kill the wideband O2 sensor required by an EFI system. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. He knows his stuff, gets back quickly to you, etc. In Stock. Specs. Systems that were already designed for marine efi. I installed it without O2 sensor, adjust on the fly. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. 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. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Master ASE tech since 91. All of the wiring begins at the throttle body and connects outward from there. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. ), https://www.ebay.com/sch/i.html?_froensor&_sacat=0, https://www.amazon.com/Bosch-Automot1296929&sr=8-3, https://www.efisystempro.com/wbo2-seer-tbi-554-155, https://forums.holley.com/showthread2927#post82927. He had one there that was run on a dyno then the fuel map was set and shipped back. :-), I started using OMC and Volvo Penta pumps for my conversion. 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. 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. I stopped by Bergeron on my way back to the lake, and he said they have never found a good way to run O2 sensors in a marine exhaust. In the event you decided earlier that you are going with the Sniper EFI System you will not have the requisite tuning capability by simply using the included handheld tuner. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. However, advanced tuning software is available for the Sniper EFI System that allow them to be tuned by a competent professional with experience tuning marine applications. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. You are using an out of date browser. 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. The ones in the Bosch box come without warranty. Miami, FL. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Are you running the entire system? The fuel pump question is the tough one. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. The light shines in the darkness, and the darkness has not overcome it. I am just now ready to do the tuning this weekend. Then if that doesn't work call the tech line they are great! The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Emissions. The O2 sensor burned out immediately. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Tech Resources. Advertising . Holley recommends a 3/8" fuel supply line. From there, the idea is that it will self-tune to the requirements of the engine. To simplify . The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. 100% identical. Categories. 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! This doesn't apply to race boats. 2 Reviews. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Categories. It does not work with the Sniper EFI oxygen sensor. It appears that its a tuning issue. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. I just discovered that was the case with my Fitech. turn on the ignition.but do not start the engine. Wideband Oxygen Sensor Extension Cable. Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment I installed a holley sniper kit. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. Aug 17, 2013. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Part# 554-155. holley efi. YES! Without Headers Steamers location (above) is perfect, up close to the engine where you . While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. . The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. As far as a sensor goes, absolutely nothing. All sensors are tested to ensure they accurately report critical engine data to the . I think installing a wide band O2 sensor in the manifold(s) is a great idea. I was thinking aluminum heads would run it up closer to 5,000 rpm. Has been since the 80's. Holley Sniper - Oxygen Sensor Location | IH8MUD Forum The Sniper EFI master kit contains the most complete EFI fuel system on the market. Throttle body mounted ECU - no extra boxes to mount. Replacement Sniper and Terminator X O2 Sensor. Sensors: Fitting: Threaded O2 . We Test It: Holley's New Sniper EFI - MotorTrend May God's grace bless you in the Lord Jesus Christ. EFI EFI kit electronic fuel injection. 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. I would back-burner the ignition control questions until you get the fuel injection working. Explained: Holley EFI Sensors and What They Do Does an yone have a pic of the O2 sensor in their exhaust? One example of a direction could be an adjustable timed delay-on injector-power relay in the injector power feed wire, delaying 1-second after key-on or whatever is necessary to bypass the prime shot time, only. I stopped by Bergeron on my way back to the lake, and he said they have never found a good way to run O2 sensors in a marine exhaust. No, use only one 02 sensor, mounted close to exhaust manifold, or high up on a Header collector, not into a single Header pipe that merely gets a exhaust pulsation. Advanced throttle body injection systems capable of transmission control and more. Holley efi behavior with bad o2 sensor, safety feature O2 sensor failure on a Holley Sniper EFI - YouTube EFI Systems based on Holley's world-class Dominator and HP ECU's. I have not had it on the dyno with the sniper, but would guess probably about 400 to 410 hp and well over 500 tq.I did use the holley pump that came with the sniper. I installed a holley sniper kit. The engine RPM when closed loop o2 will begin. 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. Terminator X O2 sensor Off the shelf replacement? Find a lower price anywhere and we'll beat it by 5%! In Stock. I installed the adapter and elbow so it's at an angle above the entry point. Fine tuned the timing to 12-15 degrees. So please, If you have problems registering or can't log into your account, please. Good luck! Sniper EFI 2300 Marine.

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