I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. 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. . Capability Range: Advanced I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Only show this user. 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). Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Stay up to date with the latest releases, events, promotions and more. 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. Shop Oxygen Sensors at Summit Racing. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. Vega$69. The throttle body has a built in fuel pressure regulator set at 58.5 psi. The plan is to 'learn' a fuel\Timing curve with a closed loop. The target A/F value based on load or MAF cfm, and engine speed. Idle and off-idle performance (particularly as the engine goes into gear.) Spray a rag down pretty good with brake cleaner. HP comes from torque and rpm and rpm breaks things and increases wear. Staff Writer. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. Sent unit back to Holley. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. p.s. Don't know about HP increase, with the QFT 750 it would turn a 212/4.0 combo to about 3950 to 4000, the Sniper turns it to 4000 to 4100. 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 . But this also makes me wonder what you did for the O2 sensor. (If I am incorrect I heartily invite your comment at the bottom of this article!) Bolt-on carburetor style EFI for your classic car or truck. Holley EFI Usb/Can Harness, Sniper Tbi. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Sensors: Fitting: Threaded O2 . I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. He had one there that was run on a dyno then the fuel map was set and shipped back. And who can blame them? This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Affiliate. Bolt-on carburetor style EFI for your classic car or truck. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Here's the pic of the location with my header. 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. Phil said water would still get up over the snail and knock out the sensor. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. test the sensor.. for a basic pass/fail of the sensor. 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. I'm guessing by snail, that's another name for the riser? If you are not running the latest software stop guessing and go download it. 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. 29. CUSTOM ART FOR CUSTOM NEEDS. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. 2 Reviews. We may earn a small commission from affiliate links and paid advertisements. is donald smith still alive; julie grant court tv cheerleader Joe, where did you end up installing the o2 sensor on your setup? 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. I just discovered that was the case with my Fitech. We also use content and scripts from third parties that may use tracking technologies. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. 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! Are you running the entire system? Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Plug into the coolant temperature sensor. Adam. All of the wiring begins at the throttle body and connects outward from there. Not always the case with a boat. The engine floods and it is embarrassing when leaving a lock. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Add To Cart. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. 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. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! I found this in the instruction manual for the older commander 950 system. Sadly, no. Only a few hours on the motor but so far so good. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! Good luck to all. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. 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. Part# 534-199. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. I'm 3" down from the bottom of the flange to center of bung. Price Point: $$$. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. 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. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . I am just now ready to do the tuning this weekend. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. . I installed a holley sniper kit. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. For gourmands, night markets not only offer scrumptious small . Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. This is great information that can only get you closer to an ideal solution. It will crank and run great for 2-15 seconds then die. I am a competent mechanic and I have checked all the usual suspect items. Sorry for the late reply, Douglas. The truck started fine after install, and ran down the road ok. Innovate Motorsports HBX-1 Bung Extender. The in tank pump is quieter, will normally run cooler and should last longer. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. Car runs perfect . Thanks. 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. My boat is still in winter storage. A replacement clamp on would be an easy change out. holley efi. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Conditions when closed loop o2 should be turned off. I had the pink ecu signal wire connected to a bullet connector on the passenger side . 2023 Holley Performance Products, Inc. All Rights Reserved. (probably with the edelbrock marine 2506 intake). If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. 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! I installed a holley sniper kit. Sniper EFI Installation Guide. The wiring was a bit of a mess. . I purchased the Holley HP MPFI system and went to the lake with it. Part Number: 510-554-155. The first option is to just buy the injector body and the controller with the wiring harness and sensors. Thanks for the feedback on this adapter, Donald. Everyone else was backordered several months. Without the engine running, AFR will read 35.6 The fuel pump will run off a relay in the sniper harness (blue wire) pink wire gets switch/run power to the relay. For a better experience, please enable JavaScript in your browser before proceeding. 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. 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. It doesn't even mean that you can't do it. Holley Sniper EFI Self-Tuning Kit - Shiny Finish, Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI Self-Tuning Kit - Classic Gold Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish. If this is a first time effort, find a tuner in your area with marine experience. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. 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. 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. Add to Cart . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. $43 per night (Latest starting price for this hotel). Thanks guys. *Possible delays due to Covid-19 click for more 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. For the most part, the small harness is plug-and-play. Newer ECMs have all the options to configure these functions. 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. 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? Q3. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. You will still get some water on the engine side of the snails, mainly at low Rs. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Find a lower price anywhere and we'll beat it by 5%! Got a picture? Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. If I am reading your post correctly you are using two separate o2 sensors when using headers ? I would back-burner the ignition control questions until you get the fuel injection working. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. $108.95. I am considering the Daytona Sensors Ignition module. so far so good love the smooth power and easy starts. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . The ones in the Bosch box come without warranty. There is no problem getting this tuned and then running open loop. Sort. If the indicator reads "LOW Err" double check the connection to the CTS. The spark must be manually tuned. 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.
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