You have to angle it to help the throttle cable get around the booster. All I can say is it made a completely different motor out of the 460, 39 degrees out and starts within 2 revolutions power is super smooth throughout the rpm range (idle to 4100rpms 212 Hamilton with 4.0 turbo impeller) has about 6 hrs of learn time. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. Visit their website for more details. Do you offer a USCG fuel pump kit? But you have to get it tuned. The clamp-on that came with mine wasnt a good fit on my 2" pipe. It's a compact HP pump and cooler assembly. I don't have enough experience with marine applications to know exactly what it will take to solve this. I will be calling around to see if I can find someone to help that has experience. 10 min read. No matter what I do, it will not start. Follow USCG rules about materials and fittings. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. For a better experience, please enable JavaScript in your browser before proceeding. Part# 554-155. holley efi. Holley Sniper O2 sensor replacement - Club Cobra Boats don't cruise at 60mph up and down hills. Free ground shipping regardless of order size! PDF Holley Sniper Installation Supplement Followed all the instructions to the letter. Jan 20, 2019. Everyone raving about customer service is telling the truth! Maybe my manifolds leaked the inside between the snail and the log?? Advertising . Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. 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. WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com . The first option is to just buy the injector body and the controller with the wiring harness and sensors. From there, the idea is that it will self-tune to the requirements of the engine. The very front would be the safest place. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. About your only location is in that short area from the log to the port face. Even if you are the sort to sort of shrug off safety regulation, consider that if there is an accident that results in a loss and an investigation, failure to follow applicable USCG regulation could result in either financial or legal liability, not to mention the rejection of insurance claims. Doesn't look like it will have an O2 sensor. To close this one out, below is a photo of where I installed the O2 bung. Description. Wideband Realities: The Truth About Oxygen Sensors - EngineLabs Bolt on 4150 Flange Carburetor Replacement. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. Holley efi behavior with bad o2 sensor, safety feature I've dunked mine lots of times. Followed all the instructions to the letter. In Stock. 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 EFI requires several pressure inputs in order to run an engine. 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.) 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. functioning controller during engine operation. They are the only ones got me a holley usb to can cable fast. Your talking flames at that point, and it will definitely have an effect on the reading. Menu. Thanks for that, Danny. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. And who can blame them? Systems that were already designed for marine efi. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Specs. 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. Innovate Motorsports HBX-1 Bung Extender. 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. Brand: Holley EFI Emission Code: 4 . Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. 2. The wiring was a bit of a mess. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. Some parts are not legal for use in California or other states with similar regulations. The ones in the Bosch box come without warranty. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! We may earn a small commission from affiliate links and paid advertisements. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. 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. Don't know about HP increase, with the QFT 750 it would turn a 212/4.0 combo to about 3950 to 4000, the Sniper turns it to 4000 to 4100. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. 02/25/2020. 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)? Add to Cart . It only runs rich on start up for a second due to the prime, after start it runs great. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. I would send an Email to Chris at EFIsystempro. The throttle body has a built in fuel pressure regulator set at 58.5 psi. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. so simple check first, whats the fuel pressure? 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. 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. 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. Wiring the Holley Sniper EFI system is equally easy. It flows 850 cfm and can support up to 650 horsepower. holley efi. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. Plug into the coolant temperature sensor. 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. All times are GMT-6. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Q3. Replaced O2 sensor but continued to have AFR issues running too rich. well I have installed the Sniper on my 460 KEM (Ford) marine motor. When problem-solving this type of issue, consider when and how you could use a work-around. For a better experience, please enable JavaScript in your browser before proceeding. The adapter does require the removal of the manifold and some machining but it allows the O2 sensor to be placed into the exhaust flow but protects it from the water exiting the block. It doesn't even mean that you can't do it. Register now for free! I have a boat with twin 3.7 Mercruisers. Got a picture? The plan is to 'learn' a fuel\Timing curve with a closed loop. 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. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. Have engine apart and head checked and cleaned at machine shop. EFI System Pro also has a good bit of tech info on their website. Supports up to 650hp with Four 100 Lb/Hr Injectors! Purely coincidence about the '2300' number. $5 Off Your $100 Mobile App Purchase . 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. I will be starting mine up this month, I hope it goes well, good luck to you. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. He had one there that was run on a dyno then the fuel map was set and shipped back. Add To Cart. No prime, but a second later it's ready to crank 'normally'. Will I be able to control my ignition timing with the Sniper? WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. 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. Fuel economy went from 12.5 to 13.5 gph to 10 gph. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Fortunately, it turns out there are some options. Miami, FL. So there is at least some probability of success. Holley EFI 554-155 Holley EFI Oxygen Sensor 10 min read Video. Aftermarket headers are pretty much the only safe way to run an O2 sensor. The engines are rated at 170 hp each. Then operate open loop with a fuel map\Timing curve.I am interested in the capabilities of the Sniper product (4 injector) in a Marine application.. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Shop Oxygen Sensors at Summit Racing. Holley Sniper EFI - Page 3 - Offshoreonly.com From there, our highly trained factory refurbish technicians flow the original fuel injectors. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. I'm about to embark on the same type of project. 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. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Sniper EFI Releases new Stealth 4150 Models! Advanced throttle body injection systems capable of transmission control and more. Then they had it repaired and back to me in 5 business days. And it is timing that is equally critical to best performance and fuel economy. 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 Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Seems to have more low end tq and is much smoother power through out the rpm range. Vega$69. Use a return fuel line. I have searched thru the forum as much as I can, with not much luck. In order for it to work as designed the O2 sensor has to be installed in a dry exhaust system and needs to be placed 1-10in from the collector in the headers. 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. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? Holley Sniper Efi - Mean Chicken Jet Boat Forum Items 1 - 21 of 21 Items. The opposing pistons share a crankpin the way they do in a V-8, but the fact that there are only three cylinders on each bank means that the plugs fire at 90-150-90-150-90-150 intervals. Engine Startup Tuning for Sniper and Terminator X Stealth Owners Are you holding your RPMs back with the MSD for some reason? 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. blue doberman puppies. Most of Holley's EFI systems provide a Setup Wizard that builds a base configuration file that allows you to start the engine and operate the vehicle. 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. This doesn't mean it can't be done. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Great Article. The spark must be manually tuned. All sensors are tested to ensure they accurately report critical engine data to the . watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Everyone else was backordered several months. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Once the tune is complete, the O2 sensor can be defeated or . Yes, this is an old thread, but it's an old unit. 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. Other? One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. 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. 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. 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. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. When it did keep running, the headers all started to smoke. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Staff Writer. Prime cannot be adjusted on this old unit. I also capped off the regulated return line with a hose, clamps, and chamfering bit. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Capability Range: Professional MAP Sensors. I had the pink ecu signal wire connected to a bullet connector on the passenger side . But MAP sensors are very easy to physically implement and are inexpensive. Free ground shipping regardless of order size! 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've seen O2 sensors in water jacketed headers that have worked fine for years. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Then if you are do you just wire the o2 sensors in parallel or do these EFI kits have inputs for more than one sensor. It should be pretty straight forward what each of these values do. Let me know how I can be of assistance. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. I just discovered that was the case with my Fitech. 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.
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