running holley sniper without o2 sensor

The World's largest is donald smith still alive; julie grant court tv cheerleader 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. Followed all the instructions to the letter. Has been since the 80's. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. I purchased the Holley HP MPFI system and went to the lake with it. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. Maybe this one has a shorter cable? I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Initial Calibration in Basic Configuration. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 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). EFI Systems based on Holley's world-class Dominator and HP ECU's. YES! Holley Sniper O2 sensor replacement. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. holley sniper efi Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish $1,475.95 Part# 550-511K holley efi 100 PSI Stainless Pressure Sensor $155.95 Part# 554-102 Are you waiting to convert your carbureted vehicle to Sniper EFI, but don't like the idea of mounting an external fuel pump? 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. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. 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. Capability Range: Advanced Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. 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. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. non biased Shelby Cobra related site! I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Wideband Oxygen Sensor Extension Cable. 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. Free ground shipping regardless of order size! 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. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). well I have installed the Sniper on my 460 KEM (Ford) marine motor. Any exhaust down at engine level or lower will definitely get at LEAST some steam. Advertising . Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Yes, this is an old thread, but it's an old unit. I received my replacement TPS and O2 sensor. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? May 1, 2018 They want you to angle it to keep it from fouling. Once the tune is complete, the O2 sensor can be defeated or . check out the. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. It's fast, simple and absolutely free. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Add to Cart . Items 1 - 21 of 21 Items. But this also makes me wonder what you did for the O2 sensor. Do you recommend in-tank or external fuel pump? This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. Yellow Init In First shown for an instant when the system is powered on. EFI is the wave of the future. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Q3. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Capability Range: Professional Super helpful and knowledgeable. 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 very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Stay up to date with the latest releases, events, promotions and more. I had an injector fail after a month of running and called the tech line who helped me figure that out. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Each engine has the Holley marine 2 barrel carburetor. What I installed on the motors was the Holley HP 19lb Holley Injectors the Holley 522-198 duel sync distributors with the MSD Digital 6A and the MSD Blaster 2 coils. Capability Range: Advanced You can selectively provide your consent below to allow such third party embeds. excessively rich mixtures), Mechanical shock (e.g. From there, our highly trained factory refurbish technicians flow the original fuel injectors. holley efi. What exhausts are the best? As far as spark control, the Sniper will let you tune those 4 points, nothing else will. 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. The light shines in the darkness, and the darkness has not overcome it. I was thinking aluminum heads would run it up closer to 5,000 rpm. Oops, after that it cranked right up.Idle was set to 950rpm so after the vid was cut off I lowered it to 820rpm and it was purring like a kitten.EFI for dummies. Thanks for the heads up. To simplify . Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. 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. Prime cannot be adjusted on this old unit. I have a 74 bronco, 302, mild cam. From there, the idea is that it will self-tune to the requirements of the engine. Thanks guys. Capability Range: Moderate I think I could run more boost but it's a real hand full right now. - You are currently viewing the forums as a GUEST. On my system, I machined in the O2 sensor right between the snail and the manifold of a . 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. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. We may earn a small commission from affiliate links and paid advertisements. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Also some tips on preventing O2 sensor damage Still needs a EFI pump and return line. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Q1. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? Sniper EFI Quadrajet Marine. I had the pink ecu signal wire connected to a bullet connector on the passenger side . If you call, they usually let you put in your name and they get back to you. And the relay and fuse were mounted along the firewall. Does an yone have a pic of the O2 sensor in their exhaust? Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. But you have to get it tuned. Distributor and ignition box? 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. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. Who knows. Dec 28, 2016. AFR was 19 area. Price Point: $$$. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. Much of the system is encased right inside the throttle bodyand that includes the ECU. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. Add To Cart. I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. Mine is right where Steamers is, and works well with my AFI TBI. Conditions when closed loop o2 should be turned off. *Possible delays due to Covid-19 click for more information. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Did a test startup on my new sniper by running the power wire to battery + and not using the o2 sensor.I also capped off the regulated return line with a hose, clamps, and chamfering bit.In the settings I chose closed loop disabled (set to open loop) and also set learn mode to disabled. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Everyone else was backordered several months. . Was in marine engineering for years. Ordered another dominator Bosch from Holley and it matches perfect. JavaScript is disabled. I have searched thru the forum as much as I can, with not much luck. Apr 13, 2017. with the extension. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. The test run was great, they have never run so well even when they were new with carbs. CTS (Coolant Temperature Sensor) - Reads engine temperature. Sniper EFI 4500 Marine. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. But MAP sensors are very easy to physically implement and are inexpensive. In this case, the prime shot is good for cold, but too much for warm. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Tech Resources. 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. It appears that its a tuning issue. 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). The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. They have been working out well for a few years now. Supports up to 650hp with Four 100 Lb/Hr Injectors! For a better experience, please enable JavaScript in your browser before proceeding. Followed all the instructions to the letter. O2 sensors are water proof. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! I will keep the replacements as spares. 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.) Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . You should then have at least 18-24" of pipe after the sensor. You must log in or register to reply here. Only a few hours on the motor but so far so good. :-), I started using OMC and Volvo Penta pumps for my conversion. Sorry for the late reply. My question is concerning what happens a year later, when I have a top-end swap . Q2. Sadly, no. I installed it without O2 sensor, adjust on the fly. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Holley EFI Oxygen Sensor. Specs. Got a picture? Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Did you use the Holley fuel pump and have you had any issues with it? What motor is this on? Warranty Information. Are you holding your RPMs back with the MSD for some reason? Let me know how I can be of assistance. I did--- Save your money and piece a fuel it together. Pay close attention to the instructions on O2 sensor placement. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. Install the throttle linkage to the Sniper EFI throttle body. Seems to have more low end tq and is much smoother power through out the rpm range. 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 . For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. Idle and off-idle performance (particularly as the engine goes into gear.) Holley EFI has the solutions you need to get your project up and running better than ever! 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. That sounds like one solution. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. Wiring the Holley Sniper EFI system is equally easy. 534-199. 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? so far so good love the smooth power and easy starts. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. It doesn't even mean that you can't do it. What is your fuel pressure at the carb during crank? Anything else is going to be a frustrating recipe for for failure. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). We also use content and scripts from third parties that may use tracking technologies. 3. ), https://www.ebay.com/sch/i.html?_froensor&_sacat=0, https://www.amazon.com/Bosch-Automot1296929&sr=8-3, https://www.efisystempro.com/wbo2-seer-tbi-554-155, https://forums.holley.com/showthread2927#post82927. CUSTOM ART FOR CUSTOM NEEDS. To close this one out, below is a photo of where I installed the O2 bung. Newer ECMs have all the options to configure these functions. 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? I am happy with Holleys no hassle replacement of the parts. But it is going to be a little tricky. 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 had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Phil said water would still get up over the snail and knock out the sensor. You have to angle it to help the throttle cable get around the booster. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Sniper EFI 4bbl Marine. the engine not running. Can anyone share their experiences with this type of setup? the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. In order to do this, it heavily relies on proper O2 sensor placement. Some parts are not legal for use in California or other states with similar regulations. Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a "criss-cross" pattern (60-80 in.lbs.). Capability Range: Advanced 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. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Throttle body mounted ECU - no extra boxes to mount. . In the case of the car, you can generally get out and walk (run?) 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. 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.