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. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Capability Range: Moderate WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. It doesn't even mean that you can't do it. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! I don't have enough experience with marine applications to know exactly what it will take to solve this. Warranty Information. 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. Thanks for the compliment--we look forward to your feedback! (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). As always, your results may vary and batteries not included. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. 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. All times are GMT-6. And who can blame them? I will get a new 02 sensor before I swap back to the orange box. CTS (Coolant Temperature Sensor) - Reads engine temperature. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Just a rumor. 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. Jun 7, 2021. Also some tips on preventing O2 sensor damage Holley EFI. But it is going to be a little tricky. 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. i thought about it, but after $3400 on an EFI alone and an entirely new rigged boat Im having a hard time forking out another 2000 for an exhaust when I may just do an open loop My buddy machined up a set of spacers I sketched out for him. Add To Cart. 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. Wondering how you are progressing with this? I want to register an account for free right now! If this could be disabled it would be much better. Followed all the instructions to the letter. The test run was great, they have never run so well even when they were new with carbs. 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. The spark must be manually tuned. The truck started fine after install, and ran down the road ok. *Possible delays due to Covid-19 click for more information. 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? Has anyone run an O2 sensor in an EFI on a marine engine? running holley sniper without o2 sensor - plural.works You will still get some water on the engine side of the snails, mainly at low Rs. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. Part# 534-199. 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 . It will crank and run great for 2-15 seconds then die. 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. Bolt-on carburetor style EFI for your classic car or truck. RPM going up and down , miss firing and backfiring. Are you holding your RPMs back with the MSD for some reason? We may earn a small commission from affiliate links and paid advertisements. Super helpful and knowledgeable. Holley sniper efi error 21 - bqfoki.lesthetiquecusago.it #1. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. I installed it without O2 sensor, adjust on the fly. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. For a better experience, please enable JavaScript in your browser before proceeding. you don't want to read that loss. I've installed several of these adaptive EFI's on cars with great success. EFI is the wave of the future. No matter what I do, it will not start. For the most part, the small harness is plug-and-play. PS, Once someone has a good 270/350 tune, everyone can use it. 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. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. I've seen O2 sensors in water jacketed headers that have worked fine for years. Other? The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. The in tank pump is quieter, will normally run cooler and should last longer. Price Point: $$$. I will be starting mine up this month, I hope it goes well, good luck to you. I had an injector fail after a month of running and called the tech line who helped me figure that out. - You are currently viewing the forums as a GUEST. Supports up to 650hp with Four 100 Lb/Hr Injectors! Then having an experienced tech from a local dyno speed shop ride in the boat as you run the power up and down, making notes. 5. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. Marine O2 Sensor Adapter Plate - Affordable Fuel Injection Bolt-on carburetor style EFI for your classic car or truck. Next, the new unit was installed onto the manifold. 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. Great Article. Sadly, no. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. A third option would be to run your EFI system without an O2 sensor at all. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. 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. Yes! Stock manifolds? Sorry for the late reply. I have a 74 bronco, 302, mild cam. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. It flows 850 cfm and can support up to 650 horsepower. Can anyone share their experiences with this type of setup? Are you running the latest software? Sniper EFI 4bbl Marine. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. The very front would be the safest place. Douglas Cline. I will let you know what happens. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Is Holley working on a complete marine package or planning to in the future? So much it could be. The target A/F value based on load or MAF cfm, and engine speed. Seems to have more low end tq and is much smoother power through out the rpm range. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. About your only location is in that short area from the log to the port face. Yellow Cold! What motor is this on? What exhausts are the best? Put an end to cold start issues, hesitations, vapor . Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette Copyright 2022 Holley Performance Products, Inc. All right reserved. . You can selectively provide your consent below to allow such third party embeds. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Replaced O2 sensor but continued to have AFR issues running too rich. We use cookies to enhance your experience while using our website. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. When it did keep running, the headers all started to smoke. Holley recommends a 3/8" fuel supply line. The fuel pump question is the tough one. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. 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. Engine Startup Tuning for Sniper and Terminator X Stealth Owners You are using an out of date browser. JavaScript is disabled. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. Will I be able to control my ignition timing with the Sniper? Maybe my manifolds leaked the inside between the snail and the log?? (probably with the edelbrock marine 2506 intake). If the indicator reads "LOW Err" double check the connection to the CTS. To close this one out, below is a photo of where I installed the O2 bung. Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 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. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. Holley EFI has the solutions you need to get your project up and running better than ever! Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. 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. For gourmands, night markets not only offer scrumptious small . Add To Cart. Thanks for the heads up. Could show a lean condition when in fact it really isn't. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). This page was generated at 08:35 AM. 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. Once the tune is complete, the O2 sensor can be defeated or . You are using an out of date browser. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Fine tuned the timing to 12-15 degrees. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Install the throttle linkage to the Sniper EFI throttle body. Holley Sniper EFI - Page 3 - Offshoreonly.com 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. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. I installed the adapter and elbow so it's at an angle above the entry point. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. EFI Systems based on Holley's world-class Dominator and HP ECU's. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. I would send an Email to Chris at EFIsystempro. 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. Holley part number 554-155. Troubleshooting Holley Sniper that hesitates on acceleration Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. 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 have also picked up another .5 gallons per hr to about 9.25 gph. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. Full time feedback from the sensor is what the computer uses to refine the fuel table. The truck started fine after install, and ran down the road ok. They have been working out well for a few years now. 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. Part Number: 510-554-155. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Once you have those points set, the rest of the map doesn't really matter, just make it look smooth/pretty and everything will be fine. Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive Features: . Capability Range: Professional temporarily running without WBO2 sensor? - Holley 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. I did--- Save your money and piece a fuel it together. Its the Holley Pro Jection TBI mentioned by the above poster.

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