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Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. 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. Fine tuned the timing to 12-15 degrees. The problem occurs when an excessive amount of oxygen makes its way from the intake port directly into the exhaust at idle and low engine speeds because of overlap. Increasing efficiency is always a good idea. 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? Only a few hours on the motor but so far so good. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Wideband Oxygen Sensor Extension Cable. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. 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. It's fast, simple and absolutely free. . I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. Sniper EFI 2300 Marine. This was for MPFI. Install the throttle linkage to the Sniper EFI throttle body. Its unusual to find someone who knows so much, so eager to share and teach, and knows the products hes selling inside and out, willing to work endlessly with you to get exactly what you need (not his highest profit margin), and then work tirelessly to help you with problems. 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. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Jan 20, 2019. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. If this is a first time effort, find a tuner in your area with marine experience. All times are GMT-6. 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. Full time feedback from the sensor is what the computer uses to refine the fuel table. I had the pink ecu signal wire connected to a bullet connector on the passenger side . I am happy with Holleys no hassle replacement of the parts. Welcome to Club Cobra! Here is one on start up tuning. Joe, where did you end up installing the o2 sensor on your setup? A forum community dedicated to performance boat owners and enthusiasts. pull the sensor out of the exhaust. 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 tried holley tech support, no answer and put on hold for hours. 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. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Next, the new unit was installed onto the manifold. The Sniper will do that. Note the temperature sensor mounted on the back of the driver side head in the above photo. The Sniper EFI master kit contains the most complete EFI fuel system on the market. 3. Idle and off-idle performance (particularly as the engine goes into gear.) 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. It works great where its at. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. p.s. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. Well an update on the Sniper install. This is the 02 sensor adapter I used. 3. Capability Range: Advanced Car runs perfect . I hope that the next F/2F header is more O2 sensor friendly. Thanks for the feedback on this adapter, Donald. 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. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. You have to angle it to help the throttle cable get around the booster. Phil said water would still get up over the snail and knock out the sensor. But it is going to be a little tricky. He had one there that was run on a dyno then the fuel map was set and shipped back. After discussing it in this thread and talking with Holley's tech support, I decided . Replaced O2 sensor but continued to have AFR issues running too rich. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. Advanced throttle body injection systems capable of transmission control and more. 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. . The new Exhaust manifolds will have wideband O2 bungs for tuning. 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 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. Just a rumor. $102.95. Welcome to ClassicBroncos! The Tech Tips and discussions are also great! Hi all, i'm contemplating doing a sniper quadrajet swap onto my volvo penta 5.7 GL 2bbl holley motor in my 1997 cobalt 200 with the DP-S outdrive. JavaScript is disabled. 74 FJ40 confined to the swamp. If you find that please let us know. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Found out that it was due to rfi/emi. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. Since the Sniper install, I encountered my second O2 sensor failure so I thought I would try the "Innovate Bung Extender" recommended by a few folks here. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. I just installed a Sniper on a 67 GTO and it was pretty straightforward, the end result was a much better starting/smother running car, than can adapt to elevation changes better, But we also installed the Holley Dual sync distributor for a complete system that adjusts timing as well. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Spray a rag down pretty good with brake cleaner. Systems that were already designed for marine efi. Still needs a EFI pump and return line. If I am reading your post correctly you are using two separate o2 sensors when using headers ? 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. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. I have searched thru the forum as much as I can, with not much luck. . Everyone raving about customer service is telling the truth! The engine floods and it is embarrassing when leaving a lock. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. 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. The reason I say this is that nowhere in this discussion is the fact that none of these systems are are handling the timing on the fly. It flows 850 cfm and can support up to 650 horsepower. 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. EFI Systems based on Holley's world-class Dominator and HP ECU's. The truck started fine after install, and ran down the road ok. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. This really applies to any O2 sensor regardless of EFI system. check out the. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . I know from some of the other posts, there have been WBO2 sensor issues. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. so simple check first, whats the fuel pressure? 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 . Wondering how you are progressing with this? You will still get some water on the engine side of the snails, mainly at low Rs. 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. Initial Calibration in Basic Configuration. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. Ran about 5 seconds and died. I have a boat with twin 3.7 Mercruisers. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. From there, the idea is that it will self-tune to the requirements of the engine. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Holley Sniper EFI Wideband Oxygen Sensor. Holley Sniper O2 sensor replacement. Are you running the latest software? It will flood itself out and won't start back, just crank and crank. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. so far so good love the smooth power and easy starts. 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've dunked mine lots of times. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. And who can blame them? excessively rich mixtures), Mechanical shock (e.g. 2023 Holley Performance Products, Inc. All Rights Reserved. See Details. Here's the pic of the location with my header. The clamp-on that came with mine wasnt a good fit on my 2" pipe. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Replacement Sniper and Terminator X O2 Sensor. I think I could run more boost but it's a real hand full right now. The in tank pump is quieter, will normally run cooler and should last longer. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. The ones in the Bosch box come without warranty. Add to Cart . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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! Have engine apart and head checked and cleaned at machine shop. Then they had it repaired and back to me in 5 business days. Price Point: $$$. My boat is still in winter storage. Capability Range: Moderate Use a return fuel line. I'm guessing by snail, that's another name for the riser? GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. 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). Sniper EFI 4500 Marine. If you let it cool down again, does it start up fine? - You are currently viewing the forums as a GUEST. Is this a viable upgrade for my boat? Q1. That sounds like one solution. Register now for free! What is your fuel pressure at the carb during crank? Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I will get a new 02 sensor before I swap back to the orange box. Essentially, when I push the clutch in and ease on the brakes to coast up to a stop light, the AFR goes lean (18:1 or so) and the engine stalls. No worse than taking the reading in the intake manifold cross over. Add To Cart. Part # 554-155. The fuel pump question is the tough one. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. Sensors: Fitting: Threaded O2 . I installed a holley sniper kit. USCG approval is certainly worth careful consideration, as being on a boat that catches on fire is even more serious than being in a car that catches on fire. The first option is to just buy the injector body and the controller with the wiring harness and sensors. 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. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. 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)? EFI System Pro also has a good bit of tech info on their website. 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.