. So there is at least some probability of success. I am happy with Holleys no hassle replacement of the parts. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. Capability Range: Advanced Add To Cart. 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. 534-199. I will let you know what happens. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . After discussing it in this thread and talking with Holley's tech support, I decided . Maybe this one has a shorter cable? Boats don't cruise at 60mph up and down hills. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Q1. Sniper EFI 4500 Marine. Other? The Sniper EFI throttle-body drops in place of your . Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. 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. The fuel pump question is the tough one. running holley sniper without o2 sensorplymouth township mi police scanner. 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. So I bought the progressive linkage but you then have . 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. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. I have a boat with twin 3.7 Mercruisers. 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. All of the wiring begins at the throttle body and connects outward from there. Dec 28, 2016. If you have long tube headers, mount the sensor approximately 6-10" after the collector. Sniper EFI Releases new Stealth 4150 Models! This doesn't apply to race boats. On my system, I machined in the O2 sensor right between the snail and the manifold of a . Everyone else was backordered several months. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. Great Article. They have been working out well for a few years now. 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. I purchased the Holley HP MPFI system and went to the lake with it. Wondering how you are progressing with this? Still trying to find more info on electronic conversion, only found Pertronix replacement for points so far.. What TBI, fuel pump, sensors and ECM computer are you using? 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. Greatest struggle is the shift interrupt. 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. The first option is to just buy the injector body and the controller with the wiring harness and sensors. 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. Aug 17, 2013. 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. p.s. . I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. The Holley Sniper EFI Quadrajet is a self-contained throttle-body injection system that's a direct replacement for spreadbore Quadrajet carburetors found on many classic GM vehicles. Make sure to put anti seize on the threads. You are using an out of date browser. 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. The O2 sensor burned out immediately. I did--- Save your money and piece a fuel it together. It may not display this or other websites correctly. Miami, FL. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. I have tried several different settings to get it going, no luck. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. I have searched thru the forum as much as I can, with not much luck. Not sure how well the sensor likes being that close to the port. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. Thinking about this I think this will work very fine! This motor would probably turn the berk to 6 grand and blow it out from a stop.Motor dyno'd on a carb @389 hp @ 4700rpm and 497 tq @3500. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. This runs in the area of $1000 and has everything you need for a basic install on almost any vehicle equipped with a four barrel carb. Does an yone have a pic of the O2 sensor in their exhaust? Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). I had an injector fail after a month of running and called the tech line who helped me figure that out. It only runs rich on start up for a second due to the prime, after start it runs great. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. We also use content and scripts from third parties that may use tracking technologies. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. If you're thinking that you've read everything above and are ready to toss the carb on your marine engine then take this handy quiz to make sure! The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. I installed the adapter and elbow so it's at an angle above the entry point. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Holley EFI has the solutions you need to get your project up and running better than ever! I will keep the in-line pump for a spare. Why? It does not look like anything particularly superior in concept. Stock manifolds? 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. Menu. I will be calling around to see if I can find someone to help that has experience. But MAP sensors are very easy to physically implement and are inexpensive. PS, Once someone has a good 270/350 tune, everyone can use it. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. I'm guessing by snail, that's another name for the riser? Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Capability Range: Professional Find a lower price anywhere and we'll beat it by 5%! Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. 3. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Is this a good upgrade? turn on the ignition.but do not start the engine. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. The truck started fine after install, and ran down the road ok. 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. 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. Thanks for that, Danny. . 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. Anything else is going to be a frustrating recipe for for failure. 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.) Will I be able to control my ignition timing with the Sniper? These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Good luck to all. 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. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Capability Range: Moderate Only show this user. Joe, where did you end up installing the o2 sensor on your setup? Holley EFI Oxygen Sensor. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. I thought about adding some sort of extra protection but never did. I've installed several of these adaptive EFI's on cars with great success. 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. $132.95. The engine RPM when closed loop o2 will begin. Holley Sniper EFI Wideband Oxygen Sensor Part Number: 510-554-155 Click image to zoom $125.99 More than 10 available Lowest Price Guarantee Sniper EFI Wideband Oxygen Sensor Replacement Part for Holley Sniper EFI and Terminator X Systems Bosch LSU 4.9 See more product details Free Shipping - Ships Today QTY Add To Cart Add to Wish List The Sniper needs a "clean" 12V wire that is hot in Start and Run. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. 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. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Sensors: Fitting: Threaded O2 . Followed all the instructions to the letter. I also capped off the regulated return line with a hose, clamps, and chamfering bit. I installed a holley sniper kit. Q2. Is the O2 sensor on the dyno must have a very long pipe extending past where it is positioned or backwash from the room air will violate the readings as well as any header leaks. I have a 74 bronco, 302, mild cam. EFI is the wave of the future. So far so good. Each engine has the Holley marine 2 barrel carburetor. 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. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. Holley recommends a 3/8" fuel supply line. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. 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.. Your talking flames at that point, and it will definitely have an effect on the reading. 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. Who knows. 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. 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. Sensors that are installed in an exhaust must be connected to a properly : For registered members this ad will NOT show. Sadly, no. Specs. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In the case of the car, you can generally get out and walk (run?) The included fuel system places a 340LPH fuel pump in the tank, which can easily be . I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. blue doberman puppies. Brand: Holley EFI Emission Code: 5: Material: . 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)? This free oxygen is picked up by the O 2 sensor and determined to be indicative of a lean AFR condition when, in reality, the engine could potentially be running slightly rich. 2 Reviews. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Good luck! 74 FJ40 confined to the swamp. The engine floods and it is embarrassing when leaving a lock. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. Just a rumor. Part# 534-199. Vega$69. I am looking for a TBI with full sensors, mainly atmospheric for Sept and Oct and a Idle Air sensor for warm starts.I welcome your thoughts.Regards, "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. All sensors are tested to ensure they accurately report critical engine data to the . Can more detail be provided? Bolt-on carburetor style EFI for your classic car or truck. As always, your results may vary and batteries not included. I think installing a wide band O2 sensor in the manifold(s) is a great idea. Powering the Sniper, There are three wires that need to be connected to power on the Sniper, Red and Black main power wires, these need to be run directly to the battery and have a solid connection. Add to Cart . And who can blame them? Add to Cart . No prime, but a second later it's ready to crank 'normally'. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Its the Holley Pro Jection TBI mentioned by the above poster. HP comes from torque and rpm and rpm breaks things and increases wear. Phil is right. YES! 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. Mike. you don't want to read that loss. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. You must log in or register to reply here. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Capability Range: Advanced 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. 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. Replacement Sniper and Terminator X O2 Sensor. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? EFI EFI kit electronic fuel injection. For the most part each engine wants a bit of its own timing set-up IMHO, you boat owners with a 270HP 350 (or any other config) may want 350HP but upgrading it to that level will reduce or eliminate reliability. If this could be disabled it would be much better. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Thanks for the heads up. Holley's self learning system is a blessing and a curse. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles.

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