Items 1 - 21 of 21 Items. Ordered another dominator Bosch from Holley and it matches perfect. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Capability Range: Moderate Good luck! 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. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. 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. It could be an instant fix. Thanks for the feedback on this adapter, Donald. 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. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. 2023 Holley Performance Products, Inc. All Rights Reserved. Followed all the instructions to the letter. well I have installed the Sniper on my 460 KEM (Ford) marine motor. You must log in or register to reply here. holley sniper efi Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish $1,475.95 Part# 550-511K holley efi 100 PSI Stainless Pressure Sensor $155.95 Part# 554-102 Are you waiting to convert your carbureted vehicle to Sniper EFI, but don't like the idea of mounting an external fuel pump? Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. And who can blame them? However, there's a good chance you will want to add a wideband O2 sensor at some point, in order to give the MegaSquirt more tuning information. I found this in the instruction manual for the older commander 950 system. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Capability Range: Advanced Sorry for the late reply. Could show a lean condition when in fact it really isn't. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. 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. Holley EFI Oxygen Sensor. Bolt-on carburetor style EFI for your classic car or truck. To simplify . Will I be able to control my ignition timing with the Sniper? He also explains how to properly install them. 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. Copyright 2022 Holley Performance Products, Inc. All right reserved. You are using an out of date browser. Holley recommends a 3/8" fuel supply line. JavaScript is disabled. 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. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Conditions when closed loop o2 should be turned off. 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. A 90-degree V-6 has three shared crankpins set 120 degrees apart. Are you holding your RPMs back with the MSD for some reason? 5. EFI EFI kit electronic fuel injection. But you have to get it tuned. Install the throttle linkage to the Sniper EFI throttle body. Register now for free! HP comes from torque and rpm and rpm breaks things and increases wear. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Part # 554-155. 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. Warranty Information. Still needs a EFI pump and return line. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. I think installing a wide band O2 sensor in the manifold(s) is a great idea. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Much of the system is encased right inside the throttle bodyand that includes the ECU. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. It's fast, simple and absolutely free. 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. Plug-And-Play Compatible with Holley Sniper EFI System, Only for applications that use a Bosch LSU 4.9 0 258 017 025 (17025) Wideband O2 Sensor, Particulates, carbon (e.g. Holley EFI. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. QFI-500 Oxygen Sensor. Shop Oxygen Sensors at Summit Racing. Add to Cart . Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. 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. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. What I think a lot of folks are missing is correct tuning of their carburetor engines Most inboard systems I worked on were intentionally set up to run rich with minimal timing (mostly to get through the warranty period). Holley part number 554-155. 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. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! - You are currently viewing the forums as a GUEST. 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. Supports up to 650hp with Four 100 Lb/Hr Injectors! I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. 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. I am happy with Holleys no hassle replacement of the parts. My bet based on longer pump run, to make pressure, you have a leaking injector. I want to register an account for free right now! I have a 74 bronco, 302, mild cam. I thought about adding some sort of extra protection but never did. This really applies to any O2 sensor regardless of EFI system. Is this a good upgrade? Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Is Holley working on a complete marine package or planning to in the future? EFI is the wave of the future. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Miami, FL. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Increasing efficiency is always a good idea. Yes, this is going to be an added expense, however, it will help guarantee your success. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. The engines are rated at 170 hp each. Let me know how I can be of assistance. Other? It is possible for the ECU to have an internal failure that can kill O2 sensors. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Emissions. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Without Headers Steamers location (above) is perfect, up close to the engine where you . Find a lower price anywhere and we'll beat it by 5%! Some parts are not legal for use in California or other states with similar regulations. 29. Sniper EFI 4bbl Marine. Bolt-on carburetor style EFI for your classic car or truck. We use cookies to enhance your experience while using our website. Holley 554-100 NTK Wideband Oxygen Sensor. Boats don't cruise at 60mph up and down hills. functioning controller during engine operation. Only show this user. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 5. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. The very front would be the safest place. I don't have enough experience with marine applications to know exactly what it will take to solve this. May 19, 2021. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. It works fine. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. I know from some of the other posts, there have been WBO2 sensor issues. Great Article. Sniper EFI 4bbl Marine. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. looking at doing the same. It has about 18 hrs to date and is working great. 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. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. But it is going to be a little tricky. Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? 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. I recommend popping for the Master . 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. Staff Writer. When buying the Holley Sniper EFI kit, you've got two basic options. It will crank and run great for 2-15 seconds then die. 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. 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. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Full product line and accessories at excellent pricing. The O2 sensor burned out immediately. Everyone raving about customer service is telling the truth! The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. No one cares about your buddies old antiquated garden hose technology. Q3. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. 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. 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. running holley sniper without o2 sensorplymouth township mi police scanner. 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. Also some tips on preventing O2 sensor damage . Replacement Sniper and Terminator X O2 Sensor. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Purely coincidence about the '2300' number. Affiliate. And it is timing that is equally critical to best performance and fuel economy. Systems that were already designed for marine efi. Any exhaust down at engine level or lower will definitely get at LEAST some steam. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to With a bad TPS you will have to manually prime to try and get it . I have a 74 bronco, 302, mild cam. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Everyone else was backordered several months. 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. 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. Holley EFI has the solutions you need to get your project up and running better than ever! In Stock. Bolt on 4150 Flange Carburetor Replacement. Part # HM206. ), 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. The Sniper EFI throttle-body drops in place of your . Sniper EFI 2300 Marine. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Capability Range: Advanced 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. I would back-burner the ignition control questions until you get the fuel injection working. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Homemade body parts replace the originals as they rot away but it's a 40 on the inside. I received my replacement TPS and O2 sensor. Everything about the fuel prime shot can be adjusted. If the indicator reads "LOW Err" double check the connection to the CTS. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. I'm guessing by snail, that's another name for the riser? Pay close attention to the instructions on O2 sensor placement. Capability Range: Moderate 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. The in tank pump is quieter, will normally run cooler and should last longer. Runs like a champ now. Stay up to date with the latest releases, events, promotions and more. Follow USCG rules about materials and fittings. For a better experience, please enable JavaScript in your browser before proceeding. Your talking flames at that point, and it will definitely have an effect on the reading. Yellow Cold! If I am reading your post correctly you are using two separate o2 sensors when using headers ? I've seen O2 sensors in water jacketed headers that have worked fine for years. I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. Then they had it repaired and back to me in 5 business days. 2014 FJ Cruiser - White - 4X4 - Loaded - . 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)? That sounds like one solution. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. If this is a first time effort, find a tuner in your area with marine experience. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. Register now for free!) Adam. Part# 554-155. holley efi. EFI System Pro had everything I needed for my EFI upgrade. Look at the bottom.. I will get a new 02 sensor before I swap back to the orange box. What is your fuel pressure at the carb during crank? Replaced O2 sensor but continued to have AFR issues running too rich. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. The O2 sensor burned out immediately. I have searched thru the forum as much as I can, with not much luck. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. THen you have to determine if you want 02 readings from one cylinder, or in the case you just mentioned mostly one cylinder, average of 4 cylinders on one bank or the other, or average of all 8 cylinders. Just a rumor. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. (probably with the edelbrock marine 2506 intake). Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. JavaScript is disabled. Add To Cart. It may not be enough to cause problems with the way the engine runs aor even make into the cylinders, but it is enough of a mist to take out a O2 sensor. The light shines in the darkness, and the darkness has not overcome it. 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. Once you have those points set, the rest of the map doesn't really matter, just make it look smooth/pretty and everything will be fine. Without the engine running, AFR will read 35.6 The fuel pump will run off a relay in the sniper harness (blue wire) pink wire gets switch/run power to the relay. Maybe this one has a shorter cable? Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Stay up to date with the latest releases, events, promotions and more.