running holley sniper without o2 sensor

Has anyone run an O2 sensor in an EFI on a marine engine? Vega$69. Holley's self learning system is a blessing and a curse. An O2 sensor is used when converting an engine to fuel injection and wanting to move from an "open loop" system to a "closed loop" system. 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.) Q2. 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. Q1. Add to Cart . so simple check first, whats the fuel pressure? Do you offer a USCG fuel pump kit? Otherwise I have to check for a place in my gasoline tank to put the lines in. Only show this user. Fortunately, it turns out there are some options. 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. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to YES! Joe, where did you end up installing the o2 sensor on your setup? 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. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. I upgraded from terminator x Maxx to dominator.. bought a 2nd o2 sensor kit with Bosch sensor and used an off the shelf Bosch I had been using with terminator. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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! . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Be sure to disable autotune and remove the O2 sensor before it dies. The test run was great, they have never run so well even when they were new with carbs. It will crank and run great for 2-15 seconds then die. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. Brand: Holley EFI Emission Code: 4 . Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. 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. Everything about the fuel prime shot can be adjusted. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! $132.95. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Ran about 5 seconds and died. Ref: https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/I heard of the new Sniper EFI from some chatter on OffshoreOnly.com. They are about 4 inches long, in-line between the log and manifold. I will keep the replacements as spares. The Fora platform includes forum software by XenForo. Plug into the coolant temperature sensor. 534-199. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. 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. The Sniper EFI throttle-body drops in place of your . :-), I started using OMC and Volvo Penta pumps for my conversion. Install the throttle linkage to the Sniper EFI throttle body. Also some tips on preventing O2 sensor damage 10 min read. Could show a lean condition when in fact it really isn't. Other countries likely have simmilar approval processes for marine engines. Wideband Oxygen Sensor Extension Cable. It's fast, simple and absolutely free. 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. Late to the party but here's where mine are installed. CUSTOM ART FOR CUSTOM NEEDS. 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. Yes, this is an old thread, but it's an old unit. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. JavaScript is disabled. Great Article. *Possible delays due to Covid-19 click for more information. Price Point: $$$. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Thanks guys. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Capability Range: Advanced Categories. The O2 sensor burned out immediately. Any exhaust down at engine level or lower will definitely get at LEAST some steam. Q3. Bolt-on carburetor style EFI for your classic car or truck. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Staff Writer. Register now for free! Are you running the entire system? It does not work with the Sniper EFI oxygen sensor. 5. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Sniper EFI 4bbl Marine. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. 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. 29. I am considering the Daytona Sensors Ignition module. 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). I purchased the Holley HP MPFI system and went to the lake with it. Follow USCG rules about materials and fittings. I will get a new 02 sensor before I swap back to the orange box. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). O2 sensors are water proof. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. 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. But MAP sensors are very easy to physically implement and are inexpensive. See Details. 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. is donald smith still alive; julie grant court tv cheerleader Anybody got a good 270hp 350 tune yet?I installed sniper efi on my boat runs good but feel like the wot should be better need to get the sniper controlling spark is my thoughts the old thunderbolt is either not great or timing wasn't right when I bought the boat but she runs great I just think this engine has more in it then I'm getting out of it at this time any tuning and timing advice would be great considering I'm awesome with carb n hei diet but new to efi and boat timing curve but not an idiot so I say. so far so good love the smooth power and easy starts. JavaScript is disabled. ), 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. In the case of the car, you can generally get out and walk (run?) The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. No worse than taking the reading in the intake manifold cross over. About your only location is in that short area from the log to the port face. I have a boat with twin 3.7 Mercruisers. 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. Will I be able to control my ignition timing with the Sniper? On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Wiring the Holley Sniper EFI system is equally easy. The engine floods and it is embarrassing when leaving a lock. I thought about adding some sort of extra protection but never did. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Stay up to date with the latest releases, events, promotions and more. 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 would back-burner the ignition control questions until you get the fuel injection working. If you let it cool down again, does it start up fine? Thinking about this I think this will work very fine! Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. 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. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Sensors that are installed in an exhaust must be connected to a properly So far so good. 02/25/2020. All of the wiring begins at the throttle body and connects outward from there. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Part # 554-155. It has about 18 hrs to date and is working great. 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. 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. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. You must log in or register to reply here. . Price Point: $, Advanced throttle body injection systems capable of transmission control and more.

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