I was thinking aluminum heads would run it up closer to 5,000 rpm. The clamp-on that came with mine wasnt a good fit on my 2" pipe. I am interested in upgrading both engines with Pertronix Ignitor or Ignitor II ignition and the Holley Sniper EFI 2300 and the Howell EFI marine O2 sensor adapter. 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. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Then turn the engine off and "lock in" the tune in a non-feedback loop mode, and quickly remove the headers and wash them off to prevent damage and then swap to the manifolds, but that would honestly be a huge PITA. Holley Sniper Efi - Mean Chicken Jet Boat Forum You'll also notice that the firing order is 1-6-5-4-3-2. $43 per night (Latest starting price for this hotel). 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. pull the sensor out of the exhaust. Holley part number 554-155. I have searched thru the forum as much as I can, with not much luck. If this is a first time effort, find a tuner in your area with marine experience. The spark must be manually tuned. Phil is right. When it did keep running, the headers all started to smoke. And it is timing that is equally critical to best performance and fuel economy. 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? Brand: Holley EFI Emission Code: 5: Material: . I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? QFI-500 Oxygen Sensor. 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. To simplify . It's hallmark is its simplicity--but in this case it is also it's shortcoming. Engine Startup Tuning for Sniper and Terminator X Stealth Owners It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. Full time feedback from the sensor is what the computer uses to refine the fuel table. No matter what I do, it will not start. Holley 554-100 NTK Wideband Oxygen Sensor. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Thanks again for writing! I recommend popping for the Master . 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. Plug into the coolant temperature sensor. Distributor and ignition box? Terminator X O2 sensor Off the shelf replacement? Full product line and accessories at excellent pricing. But MAP sensors are very easy to physically implement and are inexpensive. Sort. $102.95. All times are GMT-6. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. 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). Visit their website for more details. The truck started fine after install, and ran down the road ok. Holley sent him a new one for free. The spark must be manually tuned. - You are currently viewing the forums as a GUEST. I will get a new 02 sensor before I swap back to the orange box. . Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. Just a rumor. I don't have enough experience with marine applications to know exactly what it will take to solve this. Are you holding your RPMs back with the MSD for some reason? You will still get some water on the engine side of the snails, mainly at low Rs. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). For now I have a genuine bosch O2 and Standard Automotive TPS installed. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. 2023 Holley Performance Products, Inc. All Rights Reserved. Sensors: Fitting: Threaded O2 . Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Idle and off-idle performance (particularly as the engine goes into gear.) 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. Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Increasing efficiency is always a good idea. Yes! Sniper EFI Releases new Stealth 4150 Models! New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Capability Range: Professional Holley Sniper EFI - Page 3 - Offshoreonly.com 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. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. That is defacto step one in trouble shooting fuel injection systems. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. According to AEM Electronics, a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: Additionally, if an Sniper or Terminator X EFI System has repeated O2 sensor failures and none of the above-listed suggestions seem likely then contact Holley and arrange to have the unit tested. The engine floods and it is embarrassing when leaving a lock. AFR was 19 area. He had one there that was run on a dyno then the fuel map was set and shipped back. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! Sort. I have searched thru the forum as much as I can, with not much luck. 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. 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. Sensors that are installed in an exhaust must be connected to a properly Not always the case with a boat. Holley Sniper O2 sensor replacement. Has anyone run an O2 sensor in an EFI on a marine engine? Holley EFI Oxygen Sensor. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. 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. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. But for just over $10 and two simple configuration changes you can switch to a progressive linkage that opens only the two primary barrels at first and then brings in the secondary barrels at a later point. Welcome to Club Cobra! Find a lower price anywhere and we'll beat it by 5%! Sent unit back to Holley. 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. 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. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Innovate Motorsports HBX-1 Bung Extender. Any exhaust down at engine level or lower will definitely get at LEAST some steam. 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. The engines are rated at 170 hp each. Aug 17, 2013. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Everything about the fuel prime shot can be adjusted. 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. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. 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. Some parts are not legal for use in California or other states with similar regulations. They have mods that help. Thinking about this I think this will work very fine! 3. . Douglas Cline. 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. Could show a lean condition when in fact it really isn't. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Runs like a champ now. The Sniper EFI throttle-body drops in place of your . The fuel pump question is the tough one. You are using an out of date browser. Capability Range: Advanced I found this in the instruction manual for the older commander 950 system. The truck started fine after install, and ran down the road ok. My boat is still in winter storage. 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. After discussing it in this thread and talking with Holley's tech support, I decided . Anything else is going to be a frustrating recipe for for failure. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 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.
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