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. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Jun 7, 2021. I'm 3" down from the bottom of the flange to center of bung. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. . The Sniper EFI master kit contains the most complete EFI fuel system on the market. 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. Followed all the instructions to the letter. So I bought the progressive linkage but you then have . 29. This page was generated at 08:35 AM. $5 Off Your $100 Mobile App Purchase . If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. well I have installed the Sniper on my 460 KEM (Ford) marine motor. Joe, where did you end up installing the o2 sensor on your setup? Sorry for the late reply. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Initial Calibration in Basic Configuration. 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. It's fast, simple and absolutely free. In the case of the car, you can generally get out and walk (run?) 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. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. May 19, 2021. EFI EFI kit electronic fuel injection. 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. Idle and off-idle performance (particularly as the engine goes into gear.) The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. 4. Part# 534-199. Will I be able to control my ignition timing with the Sniper? Install the throttle linkage to the Sniper EFI throttle body. 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. Add to Cart . It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt. Mark Twain, The goal in life: To die young as late as possible. What is your fuel pressure at the carb during crank? JavaScript is disabled. Can more detail be provided? For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. The light shines in the darkness, and the darkness has not overcome it. Let me know how I can be of assistance. It will flood itself out and won't start back, just crank and crank. PS, Once someone has a good 270/350 tune, everyone can use it. Sniper EFI 4bbl Marine. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. O2 sensors are water proof. Price Point: $$$. It does not look like anything particularly superior in concept. I have not gone back in to try to fine tune them. I will be starting mine up this month, I hope it goes well, good luck to you. Holley EFI has the solutions you need to get your project up and running better than ever! Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. $43 per night (Latest starting price for this hotel). If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. Spray a rag down pretty good with brake cleaner. (probably with the edelbrock marine 2506 intake). Sniper EFI Quadrajet Marine. After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. In order for it to work as designed the O2 sensor has to be installed in a dry exhaust system and needs to be placed 1-10in from the collector in the headers. Holley 554-100 NTK Wideband Oxygen Sensor. Sensors: Fitting: Threaded O2 . To those who have installed the Sniper EFI units, please post up some photos of where you tapped the exhaust line to install the Oxygen Sensor's weld bung. Capability Range: Professional Wondering how you are progressing with this? The original Holley Sniper instructions are available on the Holley website if you have misplaced them. May God's grace bless you in the Lord Jesus Christ. This is the 02 sensor adapter I used. Price Point: $$$. Then if that doesn't work call the tech line they are great! You should then have at least 18-24" of pipe after the sensor. 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. Replacement Sniper and Terminator X O2 Sensor. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Found out that it was due to rfi/emi. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Just a rumor. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Follow USCG rules about materials and fittings. Here's the pic of the location with my header. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Super helpful and knowledgeable. CTS (Coolant Temperature Sensor) - Reads engine temperature. For a better experience, please enable JavaScript in your browser before proceeding. Categories. Then they had it repaired and back to me in 5 business days. running holley sniper without o2 sensorplymouth township mi police scanner. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. The new throttle response was significant,fuel saving and gave me a turn key cold start.Still I can't have an idle speed under load and a turn key warm start. He is a wizard, might be able to give you some pointers, will ask you what version of the software you are on, whether you're running the progressive adjustable linkage, etc. p.s. Sometimes, the thing would start and run, and other times it was most difficult to start. This requires removing the plug with a breaker bar, and using a 1/2 NPT to 3/8 NPT adapter to mount the Sniper sensor. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Sniper EFI Releases new Stealth 4150 Models! 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 in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. 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. I purchased the Holley HP MPFI system and went to the lake with it. 2 Reviews. In Stock. I have searched thru the forum as much as I can, with not much luck. Items 1 - 21 of 21 Items. 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. Yellow Cold! Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. $108.95. 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. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Thanks again for writing! The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. I will let you know what happens. After discussing it in this thread and talking with Holley's tech support, I decided . Stay up to date with the latest releases, events, promotions and more. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. I have not yet got it figured out. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Fortunately, it turns out there are some options. 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. Look at the bottom.. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Otherwise I have to check for a place in my gasoline tank to put the lines in. It has about 18 hrs to date and is working great. Bolt-on carburetor style EFI for your classic car or truck. My question is concerning what happens a year later, when I have a top-end swap . 3. The clamp-on that came with mine wasnt a good fit on my 2" pipe. 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)? Sorry for the late reply, Douglas. Yes, this is going to be an added expense, however, it will help guarantee your success. 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. But MAP sensors are very easy to physically implement and are inexpensive. That is defacto step one in trouble shooting fuel injection systems. Followed all the instructions to the letter. 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. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Are you running the latest software? From there, the idea is that it will self-tune to the requirements of the engine. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. 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. I just installed a Sniper on a 67 GTO and it was pretty straightforward, the end result was a much better starting/smother running car, than can adapt to elevation changes better, But we also installed the Holley Dual sync distributor for a complete system that adjusts timing as well. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Without Headers Steamers location (above) is perfect, up close to the engine where you . 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. I'm about to embark on the same type of project. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Apr 13, 2017. with the extension. I will be calling around to see if I can find someone to help that has experience. Only a few hours on the motor but so far so good. 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. Are you holding your RPMs back with the MSD for some reason? It is possible for the ECU to have an internal failure that can kill O2 sensors. 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. No matter what I do, it will not start. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. I've seen O2 sensors in water jacketed headers that have worked fine for years. I installed the adapter and elbow so it's at an angle above the entry point. I have tried several different settings to get it going, no luck. you don't want to read that loss. *Possible delays due to Covid-19 click for more information. Advanced throttle body injection systems capable of transmission control and more. Holley sent him a new one for free. My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. I hope that the next F/2F header is more O2 sensor friendly. If this is a first time effort, find a tuner in your area with marine experience. Most of Holley's EFI systems provide a Setup Wizard that builds a base configuration file that allows you to start the engine and operate the vehicle. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . I really dont want any issues on the whitewater lol Even if you are the sort to sort of shrug off safety regulation, consider that if there is an accident that results in a loss and an investigation, failure to follow applicable USCG regulation could result in either financial or legal liability, not to mention the rejection of insurance claims. 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. so simple check first, whats the fuel pressure? JavaScript is disabled. May 1, 2018 They want you to angle it to keep it from fouling. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. 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. Stock manifolds? I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. The ones in the Bosch box come without warranty. Full product line and accessories at excellent pricing.
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