running holley sniper without o2 sensor

Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. It is possible for the ECU to have an internal failure that can kill O2 sensors. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. 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. I installed a holley sniper kit. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies Visit their website for more details. Spray a rag down pretty good with brake cleaner. HP comes from torque and rpm and rpm breaks things and increases wear. You should then have at least 18-24" of pipe after the sensor. https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. Even though you now have the USCG-approved Sniper EFI System as an option for your new EFI System you're not quite out of the woods yet. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. I did--- Save your money and piece a fuel it together. Replacement Sniper and Terminator X O2 Sensor. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. Installing MegaSquirt in Parallel With the Stock ECU I also capped off the regulated return line with a hose, clamps, and chamfering bit. My question is concerning what happens a year later, when I have a top-end swap . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Holley's self learning system is a blessing and a curse. RPM going up and down , miss firing and backfiring. I'll let you know how it works out. They are about 4 inches long, in-line between the log and manifold. In order to do this, it heavily relies on proper O2 sensor placement. Plug-And-Play Compatible with Holley Sniper EFI System, Only for applications that use a Bosch LSU 4.9 0 258 017 025 (17025) Wideband O2 Sensor, Particulates, carbon (e.g. No matter what I do, it will not start. (probably with the edelbrock marine 2506 intake). Part# 554-155. holley efi. Add To Cart. Affiliate. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. 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. We Test It: Holley's New Sniper EFI - MotorTrend I am a competent mechanic and I have checked all the usual suspect items. If this is a first time effort, find a tuner in your area with marine experience. My boat is still in winter storage. Jan 20, 2019. test the sensor.. for a basic pass/fail of the sensor. Holley EFI requires several pressure inputs in order to run an engine. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. 2 Reviews. I thought about adding some sort of extra protection but never did. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. Holley sniper help!!!! | ClassicBroncos.com Forum We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. A forum community dedicated to performance boat owners and enthusiasts. Sep 14, 2021. Warranty Information. 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. I really dont want any issues on the whitewater lol Then they had it repaired and back to me in 5 business days. The fuel lines and fittings are 3/8s with 8AN fittings and everything on the 60 requires 5/16 fuel line with 6AN fittings) Holley Sniper EFI 550-849 Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. . Some parts are not legal for use in California or other states with similar regulations. Look at the bottom.. And who can blame them? My bet based on longer pump run, to make pressure, you have a leaking injector. But it is going to be a little tricky. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Followed all the instructions to the letter. Much of the system is encased right inside the throttle bodyand that includes the ECU. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. Now the lower cost Holley Sniper advertised for March 31 2016. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. I am just now ready to do the tuning this weekend. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . If I am reading your post correctly you are using two separate o2 sensors when using headers ? Bolt on 4150 Flange Carburetor Replacement. Purely coincidence about the '2300' number. MAP Sensors. The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. Maybe this one has a shorter cable? Any exhaust down at engine level or lower will definitely get at LEAST some steam. Distributor and ignition box? 2. I will be starting mine up this month, I hope it goes well, good luck to you. 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. 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. I have tried several different settings to get it going, no luck. If he wants to run in closed loop and have the system adapting to conditions at all times, the minute he fouls he is dead in the water. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Put an end to cold start issues, hesitations, vapor . 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. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Do you offer a USCG fuel pump kit? Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. . 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. 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. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Are you running the latest software? 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. On EFI systems such as Holley's Sniper, all of the EFI sensors (except for the O2 and coolant temperature sender) are mounted snuggly in the throttle body. running holley sniper without o2 sensor - plural.works I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. 74 FJ40 confined to the swamp. Is Holley working on a complete marine package or planning to in the future? CUSTOM ART FOR CUSTOM NEEDS. 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. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. If this could be disabled it would be much better. Plug into the coolant temperature sensor. you don't want to read that loss. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 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. Add to Cart . The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Your talking flames at that point, and it will definitely have an effect on the reading. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. I'm guessing by snail, that's another name for the riser? On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Fuel economy went from 12.5 to 13.5 gph to 10 gph. The ones in the Bosch box come without warranty. 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. Installed the sniper/MSD combo on my mildly built 460 KEM. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. This doesn't mean it can't be done. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Brand: Holley EFI Emission Code: 5: Material: . PDF Holley Sniper Installation Supplement I purchased the Holley HP MPFI system and went to the lake with it. Thinking about this I think this will work very fine! Holley Sniper O2 sensor replacement - Club Cobra Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 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. I want to register an account for free right now! Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Maybe my manifolds leaked the inside between the snail and the log?? Miami, FL. Free ground shipping regardless of order size! Conditions when closed loop o2 should be turned off. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Replaced and gapped to .45 all spark plugs. Not always the case with a boat. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. It works great where its at. To take advantage of all the site features, please take a moment to register. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Sort. . About your only location is in that short area from the log to the port face. Brand: Holley EFI Emission Code: 4 . Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. I installed a holley sniper kit. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Joe, where did you end up installing the o2 sensor on your setup? Add to Cart . Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? You can selectively provide your consent below to allow such third party embeds. Thanks. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. That is defacto step one in trouble shooting fuel injection systems. I installed one also on mercruiser 260 hp. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. well I have installed the Sniper on my 460 KEM (Ford) marine motor. Could show a lean condition when in fact it really isn't. Add To Cart. The spark must be manually tuned. PS, Once someone has a good 270/350 tune, everyone can use it. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Stock manifolds? . 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. suspect bad o2 sensor with Holley efi | Yellow Bullet Forums Ran about 5 seconds and died. 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 really applies to any O2 sensor regardless of EFI system. 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. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. 29. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? I will keep the replacements as spares. So I bought the progressive linkage but you then have . In Stock. 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 have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. The throttle body has a built in fuel pressure regulator set at 58.5 psi. From there, the idea is that it will self-tune to the requirements of the engine. running holley sniper without o2 sensorplymouth township mi police scanner. I'm using the NTK sensor. 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. 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. I will be calling around to see if I can find someone to help that has experience. $132.95. The boat underway acts very much like a water brake dyno I strongly believe that a well broken in engine in good condition can stand a much more critical tune w/o issues and deliver almost the same fuel economy as the proposed EFI conversion. Who knows. 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. Everyone raving about customer service is telling the truth! 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. I tried holley tech support, no answer and put on hold for hours. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Part# 554-155. Not sure how well the sensor likes being that close to the port. No prime, but a second later it's ready to crank 'normally'. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. Capability Range: Advanced 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. It's a compact HP pump and cooler assembly. You must log in or register to reply here. Increasing efficiency is always a good idea. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. The O2 sensor burned out immediately. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: Please consult the Holley Sniper full manual and use this guide for supplemental clarification. I know from some of the other posts, there have been WBO2 sensor issues. Install the throttle linkage to the Sniper EFI throttle body. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. . 29. Q1. Sniper EFI Releases new Stealth 4150 Models! Throttle body mounted ECU - no extra boxes to mount. Emissions. 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: Moderate EFI Systems based on Holley's world-class Dominator and HP ECU's. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Holley Sniper EFI Wideband Oxygen Sensor. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. It flows 850 cfm and can support up to 650 horsepower.

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