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. Capability Range: Advanced
Holley EFI 534-49 Holley Oxygen Sensor O2 Bung Weld-In Style I want to register an account for free right now! Great Article. If you are not running the latest software stop guessing and go download it. Have engine apart and head checked and cleaned at machine shop. May God's grace bless you in the Lord Jesus Christ. And the relay and fuse were mounted along the firewall. so far so good love the smooth power and easy starts. I have a 74 bronco, 302, mild cam. Got a picture? Anything else is going to be a frustrating recipe for for failure. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Replaced and gapped to .45 all spark plugs. The Sniper EFI throttle-body drops in place of your . And it is timing that is equally critical to best performance and fuel economy. Shop Oxygen Sensors at Summit Racing. Sniper EFI 2300 Marine. Make sure to put anti seize on the threads. It may not display this or other websites correctly. Marc, you don't mention which system you installed but the Holley systems are fully configurable. the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. What I think a lot of folks are missing is correct tuning of their carburetor engines Most inboard systems I worked on were intentionally set up to run rich with minimal timing (mostly to get through the warranty period). It will crank and run great for 2-15 seconds then die. Other? Some logs have water up to just short of the port. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 5. 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. Note the temperature sensor mounted on the back of the driver side head in the above photo. Price Point: $$$. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. So far so good.
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.
Holley Sniper - Oxygen Sensor Location | IH8MUD Forum Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. You shouldn't feel too bad about that lack of knowledge, because many boat owners either don't realize that the moisture present in their wet exhaust manifold will kill the wideband O2 sensor required by an EFI system. It turns out that the loading generated a propeller in the water is significantly different than wheels on pavement, so much so that the map has to be tuned differently. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Have you visually verified that all your injectors are spraying? They have mods that help. 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. 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. Not sure how well the sensor likes being that close to the port. (probably with the edelbrock marine 2506 intake). If you find that please let us know. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. 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. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. I really dont want any issues on the whitewater lol
WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com He knows his stuff, gets back quickly to you, etc. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. 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. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. Adam. Sniper EFI Quadrajet Marine. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. I am interested in upgrading both engines with Pertronix Ignitor or Ignitor II ignition and the Holley Sniper EFI 2300 and the Howell EFI marine O2 sensor adapter. Much of the system is encased right inside the throttle bodyand that includes the ECU. Q1.
Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment Do you recommend in-tank or external fuel pump? Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. I've seen O2 sensors in water jacketed headers that have worked fine for years. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Bolt-on carburetor style EFI for your classic car or truck. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. HP comes from torque and rpm and rpm breaks things and increases wear.
Holley EFI Sniper O2 Sensor Install - YouTube The Holley Sniper EFI Quadrajet is a self-contained throttle-body injection system that's a direct replacement for spreadbore Quadrajet carburetors found on many classic GM vehicles. 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. Sadly, no. Phil is right. I am just now ready to do the tuning this weekend.
Holley Sniper EFI - Page 3 - Offshoreonly.com And who can blame them? Phil said water would still get up over the snail and knock out the sensor. Items 1 - 21 of 21 Items.
Holley sniper help!!!! | ClassicBroncos.com Forum That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Hopefully this one lasts longer than the original. The Sniper EFI master kit contains the most complete EFI fuel system on the market. (If I am incorrect I heartily invite your comment at the bottom of this article!) The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought.
Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive blue doberman puppies. 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 works great where its at. Ran about 5 seconds and died. A replacement clamp on would be an easy change out. I have a 74 bronco, 302, mild cam. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Is this a viable upgrade for my boat? This page was generated at 08:35 AM. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. It should be pretty straight forward what each of these values do. It flows 850 cfm and can support up to 650 horsepower. Followed all the instructions to the letter. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. I was thinking aluminum heads would run it up closer to 5,000 rpm. I have not yet got it figured out.
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. Can anyone share their experiences with this type of setup? Sorry for the late reply, Douglas. Supports up to 650hp with Four 100 Lb/Hr Injectors! In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Sniper EFI Releases new Stealth 4150 Models! Car runs perfect . After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. The wide band O2 sensor is required for initial running and calibration. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Look at the bottom.. Thanks for that, Danny. Install the throttle linkage to the Sniper EFI throttle body.
O2 Sensor in a boat exhaust | Performance Boats Forum AFR was 19 area. 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. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. One example of a direction could be an adjustable timed delay-on injector-power relay in the injector power feed wire, delaying 1-second after key-on or whatever is necessary to bypass the prime shot time, only. Systems that were already designed for marine efi. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! A forum community dedicated to performance boat owners and enthusiasts. 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. - You are currently viewing the forums as a GUEST. Sniper EFI Installation Guide. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. Advanced throttle body injection systems capable of transmission control and more. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! :-), I started using OMC and Volvo Penta pumps for my conversion. 2023 Holley Performance Products, Inc. All Rights Reserved. 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. Increasing efficiency is always a good idea. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. .
Explained: Holley EFI Sensors and What They Do Found out that it was due to rfi/emi. Will I be able to control my ignition timing with the Sniper? For the most part, the small harness is plug-and-play. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector.
Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Holley part number 554-155. 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! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. 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? I am happy with Holleys no hassle replacement of the parts. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. 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. 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! (REGISTERED USERS DO NOT SEE THIS POST/AD! Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Replaced O2 sensor but continued to have AFR issues running too rich. My hand is holding the connector to the sensor. Part# 554-155. holley efi. Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.
Converting Marine Engines to EFI | EFI Pro Hangout | General Studies