When it did keep running, the headers all started to smoke. Yes! Register now for free! 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. I am happy with Holleys no hassle replacement of the parts. After discussing it in this thread and talking with Holley's tech support, I decided . Sniper EFI - Holley Add to Cart . Items 1 - 21 of 21 Items. 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. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Plug into the coolant temperature sensor. Wideband Oxygen Sensor Extension Cable. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. Bolt-on carburetor style EFI for your classic car or truck. The sniper fit perfectly on the intake. 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. The Holley Sniper system sells for $999.95, installs in under 2 hours, and requires only an O2 sensor, a temp sensor (both included), an electric return-style fuel pump, and four-wires to connect.. Quote Reply Topic: Holley Sniper Posted: Jan/05/2022 at 2:01pm . PDF Holley Sniper Installation Supplement $119.95. 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 recently installed the sniper setup on my stock 71 duster 340 4 speed. If I am reading your post correctly you are using two separate o2 sensors when using headers ? It should be pretty straight forward what each of these values do. Systems that were already designed for marine efi. Top 10 Sniper EFI Installation Tips from Holley's Tom Kise The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Find a lower price anywhere and we'll beat it by 5%! Aug 17, 2013. is donald smith still alive; julie grant court tv cheerleader From there, our highly trained factory refurbish technicians flow the original fuel injectors. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. 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. Sniper EFI 4bbl Marine. 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. May God's grace bless you in the Lord Jesus Christ. Q1. . 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. Also the progressive link. 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. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. Sniper EFI Releases new Stealth 4150 Models! No, use only one 02 sensor, mounted close to exhaust manifold, or high up on a Header collector, not into a single Header pipe that merely gets a exhaust pulsation. This is great information that can only get you closer to an ideal solution. Welcome to Club Cobra! :-), I started using OMC and Volvo Penta pumps for my conversion. . Capability Range: Professional The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Fine tuned the timing to 12-15 degrees. Was in marine engineering for years. Free ground shipping regardless of order size! Welcome to ClassicBroncos! If you find that please let us know. You really want a bigger engine. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. Now the lower cost Holley Sniper advertised for March 31 2016. 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. It will crank and run great for 2-15 seconds then die. The plan is to 'learn' a fuel\Timing curve with a closed loop. 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. I know from some of the other posts, there have been WBO2 sensor issues. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Is this a viable upgrade for my boat? All of the wiring begins at the throttle body and connects outward from there. The World's largest Master ASE tech since 91. 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. But this also makes me wonder what you did for the O2 sensor. Its the Holley Pro Jection TBI mentioned by the above poster. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Advanced throttle body injection systems capable of transmission control and more. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Part# 50-5009QFT. I installed the adapter and elbow so it's at an angle above the entry point. Is Holley working on a complete marine package or planning to in the future? Initial Calibration in Basic Configuration. I had an injector fail after a month of running and called the tech line who helped me figure that out. 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. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. This really applies to any O2 sensor regardless of EFI system. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. *Possible delays due to Covid-19 click for more information. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Fuel economy went from 12.5 to 13.5 gph to 10 gph. A replacement clamp on would be an easy change out. There was a 1.5 point difference in afr between banks. OP, the Edelbrock system looks to use the same basic sensors as the Holley sniper system: TPS, MAP and O2, plus a few supporting sensors. Do you offer a USCG fuel pump kit? Sent unit back to Holley. Part # HM206. 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. . (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Followed all the instructions to the letter. . 2023 Holley Performance Products, Inc. All Rights Reserved. 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. My boat is still in winter storage. Hopefully this one lasts longer than the original. 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. 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. It works great where its at. Holley Sniper EFI Oxygen Sensors 554-155 WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com In the case of the car, you can generally get out and walk (run?) 10 min read Video. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. As a follow up, I ended up using an eBay type anti fouler elbow for the O2 sensor to try and get it out of the water in the manifolds. 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. The truck started fine after install, and ran down the road ok. The spark must be manually tuned. 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. Categories. A forum community dedicated to performance boat owners and enthusiasts. Stock manifolds? I think I could run more boost but it's a real hand full right now. Good luck to all. I did--- Save your money and piece a fuel it together. You must log in or register to reply here. What motor is this on? Tune the delay relay timing to just miss the prime shot.For cold starts, a simple push-button or switch "choke" override to power the relay during prime would provide it. I have searched thru the forum as much as I can, with not much luck. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Thanks again for writing! I'll let you know how it works out. running holley sniper without o2 sensor - plural.works Sometimes, the thing would start and run, and other times it was most difficult to start. I have searched thru the forum as much as I can, with not much luck. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Are you running the entire system? I'm guessing by snail, that's another name for the riser? Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I really dont want any issues on the whitewater lol The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. I put mine after the collector only because I have a new exhaust and muffler going in and Ill use a weld in bung and placement will be different. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I tried holley tech support, no answer and put on hold for hours. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Can anyone share their experiences with this type of setup? In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! I've installed several of these adaptive EFI's on cars with great success. While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. Dec 28, 2016. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. 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. Shop Oxygen Sensors at Summit Racing. Here is one on start up tuning. Capability Range: Advanced When problem-solving this type of issue, consider when and how you could use a work-around. Did you use the Holley fuel pump and have you had any issues with it? Homemade body parts replace the originals as they rot away but it's a 40 on the inside. No matter what I do, it will not start. I would prefer to run this brand new Holley EFI system in a closed loop, not set the fuel map, and use the O2 sensor as only a sensor. My bet based on longer pump run, to make pressure, you have a leaking injector. Here's the pic of the location with my header. holley efi. 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. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. RPM going up and down , miss firing and backfiring. He had one there that was run on a dyno then the fuel map was set and shipped back. Terminator X O2 sensor Off the shelf replacement? Car runs perfect . 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. 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. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Part# 534-199. If you are not running the latest software stop guessing and go download it. 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. Follow USCG rules about materials and fittings. 2014 FJ Cruiser - White - 4X4 - Loaded - . . I am considering the Daytona Sensors Ignition module. To those who have installed the Sniper EFI units, please post up some photos of where you tapped the exhaust line to install the Oxygen Sensor's weld bung. They have mods that help. Holley Sniper O2 sensor replacement - Club Cobra Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. Greatest struggle is the shift interrupt. To close this one out, below is a photo of where I installed the O2 bung. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Q2. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. 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. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. However, advanced tuning software is available for the Sniper EFI System that allow them to be tuned by a competent professional with experience tuning marine applications. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. Make sure to put anti seize on the threads. Pay close attention to the instructions on O2 sensor placement. About your only location is in that short area from the log to the port face. Vega$69. Then they had it repaired and back to me in 5 business days. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. running holley sniper without o2 sensorplymouth township mi police scanner. turn on the ignition.but do not start the engine. 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. Add To Cart. I found this in the instruction manual for the older commander 950 system. It appears that its a tuning issue. Holley Sniper - Oxygen Sensor Location | IH8MUD Forum What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Full time feedback from the sensor is what the computer uses to refine the fuel table. functioning controller during engine operation. Aftermarket headers are pretty much the only safe way to run an O2 sensor. For gourmands, night markets not only offer scrumptious small . away. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. 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 hos. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . The wiring was a bit of a mess. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Everyone raving about customer service is telling the truth! It may not display this or other websites correctly. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. I'm 3" down from the bottom of the flange to center of bung. Copyright 2022 Holley Performance Products, Inc. All right reserved. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Staff Writer. Any word on this? My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. You must log in or register to reply here. EFI System Pro had everything I needed for my EFI upgrade. suspect bad o2 sensor with Holley efi | Yellow Bullet Forums Installing MegaSquirt in Parallel With the Stock ECU Holley's self learning system is a blessing and a curse. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. No one cares about your buddies old antiquated garden hose technology. 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? 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. Precisely Adam. This page was generated at 08:35 AM. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Will I be able to run both systems off of one fuel pump? Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. I would send an Email to Chris at EFIsystempro. Holley EFI requires several pressure inputs in order to run an engine. 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. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Full product line and accessories at excellent pricing. The in tank pump is quieter, will normally run cooler and should last longer. I have a 74 bronco, 302, mild cam. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Much of the system is encased right inside the throttle bodyand that includes the ECU. I received my replacement TPS and O2 sensor. Replaced and gapped to .45 all spark plugs. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Price Point: $$$. 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.