Conditions when closed loop o2 should be turned off. Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. When problem-solving this type of issue, consider when and how you could use a work-around. Sep 14, 2021. The reason I say this is that nowhere in this discussion is the fact that none of these systems are are handling the timing on the fly. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Bolt-on carburetor style EFI for your classic car or truck. What I think a lot of folks are missing is correct tuning of their carburetor engines Most inboard systems I worked on were intentionally set up to run rich with minimal timing (mostly to get through the warranty period). Items 1 - 21 of 21 Items. Still needs a EFI pump and return line. I will keep the replacements as spares. Welcome to ClassicBroncos! JavaScript is disabled. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. Price Point: $$$. It works fine. Holley efi behavior with bad o2 sensor, safety feature Have engine apart and head checked and cleaned at machine shop. Some parts are not legal for use in California or other states with similar regulations. Throttle body mounted ECU - no extra boxes to mount. I have tried several different settings to get it going, no luck. I have a 74 bronco, 302, mild cam. As far as a sensor goes, absolutely nothing. Explained: Holley EFI Sensors and What They Do Running? Holley 554-100 NTK Wideband Oxygen Sensor. Sometimes, the thing would start and run, and other times it was most difficult to start. I don't have enough experience with marine applications to know exactly what it will take to solve this. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. 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. Capability Range: Advanced Holley Sniper - Oxygen Sensor Location | IH8MUD Forum Prime cannot be adjusted on this old unit. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. 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. I would back-burner the ignition control questions until you get the fuel injection working. Even though you now have the USCG-approved Sniper EFI System as an option for your new EFI System you're not quite out of the woods yet. Part Number: 510-554-155. Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. But MAP sensors are very easy to physically implement and are inexpensive. I was thinking aluminum heads would run it up closer to 5,000 rpm. Yes, this is an old thread, but it's an old unit. 2014 FJ Cruiser - White - 4X4 - Loaded - . Yellow Init In First shown for an instant when the system is powered on. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. - You are currently viewing the forums as a GUEST. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. The adapter does require the removal of the manifold and some machining but it allows the O2 sensor to be placed into the exhaust flow but protects it from the water exiting the block. For a better experience, please enable JavaScript in your browser before proceeding. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. 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. I recommend popping for the Master . 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. In order to do this, it heavily relies on proper O2 sensor placement. 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. Found out that it was due to rfi/emi. Aug 17, 2013. 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)? 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. Q3. 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. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. Sniper EFI 4bbl Marine. 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. It works great where its at. KAYAK searches hundreds of travel sites to help you find and book the hotel deal at O2 Hotel Taipei Main Station that suits you best. Maybe my manifolds leaked the inside between the snail and the log?? Followed all the instructions to the letter. Part # 554-155. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. For gourmands, night markets not only offer scrumptious small . I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. . We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Purely coincidence about the '2300' number. Holley EFI Oxygen Sensor. running holley sniper without o2 sensorplymouth township mi police scanner. Essentially, when I push the clutch in and ease on the brakes to coast up to a stop light, the AFR goes lean (18:1 or so) and the engine stalls. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. The Fora platform includes forum software by XenForo. 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. Does an yone have a pic of the O2 sensor in their exhaust? Product Q&A . PDF Holley Sniper Installation Supplement Holley sent him a new one for free. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? PS, Once someone has a good 270/350 tune, everyone can use it. Much of the system is encased right inside the throttle bodyand that includes the ECU. Sniper EFI Releases new Stealth 4150 Models! running holley sniper without o2 sensor - dowdcreative.com Plug-And-Play Compatible with Holley Sniper EFI System, Only for applications that use a Bosch LSU 4.9 0 258 017 025 (17025) Wideband O2 Sensor, Particulates, carbon (e.g. Make sure to put anti seize on the threads. Everyone else was backordered several months. well I have installed the Sniper on my 460 KEM (Ford) marine motor. QFI-500 Oxygen Sensor. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. I wanted to let you all know, I have modified a mercruiser Cool Fuel Gen 3 module(mounted on the engine) to provide fuel to a sniper. *Possible delays due to Covid-19 click for more information. Did you use the Holley fuel pump and have you had any issues with it? 10 min read. And it is timing that is equally critical to best performance and fuel economy. For now I have a genuine bosch O2 and Standard Automotive TPS installed. 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. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. You have to one big hole in the riser, then you reach the cooling water, and one little hole in the next part of metal: now you reach the exhaust gasses. 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. $132.95. Also some tips on preventing O2 sensor damage 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. Will I be able to run both systems off of one fuel pump? Thinking about this I think this will work very fine! If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! turn on the ignition.but do not start the engine. Thanks for the compliment--we look forward to your feedback! CUSTOM ART FOR CUSTOM NEEDS. You are using an out of date browser. 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. Brand: Holley EFI Emission Code: 4 . holley efi. Sensors that are installed in an exhaust must be connected to a properly Followed all the instructions to the letter. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. . Initial Calibration in Basic Configuration. The in tank pump is quieter, will normally run cooler and should last longer. 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. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. The plan is to 'learn' a fuel\Timing curve with a closed loop. 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. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. Adam. I have not gone back in to try to fine tune them. Yes! Capability Range: Advanced Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. O2 Sensor in a boat exhaust | Performance Boats Forum You must log in or register to reply here. . Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. 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. However, advanced tuning software is available for the Sniper EFI System that allow them to be tuned by a competent professional with experience tuning marine applications. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. 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. Be sure to disable autotune and remove the O2 sensor before it dies. It's fast, simple and absolutely free. EFI Systems based on Holley's world-class Dominator and HP ECU's. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Distributor and ignition box? They have been working out well for a few years now. Idle and off-idle performance (particularly as the engine goes into gear.) 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! Here is one on start up tuning. We may earn a small commission from affiliate links and paid advertisements. Staff Writer. Holley Sniper Efi - Mean Chicken Jet Boat Forum #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. pull the sensor out of the exhaust. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! :-), I started using OMC and Volvo Penta pumps for my conversion. There was a 1.5 point difference in afr between banks. The test run was great, they have never run so well even when they were new with carbs. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. This page was generated at 08:35 AM. 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. Other countries likely have simmilar approval processes for marine engines. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. Sent unit back to Holley. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. It could be an instant fix. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. Tech Resources. The truck started fine after install, and ran down the road ok. 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. . Runs like a champ now. It's a compact HP pump and cooler assembly. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. 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. Thanks for that, Danny. What exhausts are the best? The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Register now for free!) The new Exhaust manifolds will have wideband O2 bungs for tuning. I really dont want any issues on the whitewater lol Maybe this one has a shorter cable? 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. Precisely Adam. Once the tune is complete, the O2 sensor can be defeated or . Master ASE tech since 91. 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. Any exhaust down at engine level or lower will definitely get at LEAST some steam. The engine floods and it is embarrassing when leaving a lock. test the sensor.. for a basic pass/fail of the sensor. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Add To Cart. You need to intimately know the system you are using, its capabilities and limitations, install it correctly and have it tuned with someone with experience specific to marine applications. I will be starting mine up this month, I hope it goes well, good luck to you. temporarily running without WBO2 sensor? - Holley But you have to get it tuned. 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. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. I think I could run more boost but it's a real hand full right now. Sort. I'm about to embark on the same type of project. $108.95. 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. Some logs have water up to just short of the port. Is this a good upgrade? Holley sniper issues - 1969-70 Technical Forum - 69stang.com and That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 5. Holley EFI has the solutions you need to get your project up and running better than ever! I think installing a wide band O2 sensor in the manifold(s) is a great idea. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Then operate open loop with a fuel map\Timing curve.I am interested in the capabilities of the Sniper product (4 injector) in a Marine application.. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. I hope that the next F/2F header is more O2 sensor friendly. Holley part number 554-155. Part # HM206. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. No matter what I do, it will not start. Welding in an O2 Sensor Bung for a Holley Sniper EFI System If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style.