running holley sniper without o2 sensor

Find a lower price anywhere and we'll beat it by 5%! When buying the Holley Sniper EFI kit, you've got two basic options. Depending on how fast you want one, there are plenty out there: The Cross ref numbers on the Holley forums and the Net is a Bosch 17025. Sent unit back to Holley. The test run was great, they have never run so well even when they were new with carbs. The sniper fit perfectly on the intake. Visit their website for more details. I want to register an account for free right now! Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. Also some tips on preventing O2 sensor damage Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. test the sensor.. for a basic pass/fail of the sensor. Hello Chris,Ontario's boating season is about to launch for another year.Do you have any good news to add to your above article, any new marine friendly TBI products?In '08,I installed a Holley 21-700 TBI with the o2 mounted in the manifold to Holly specs. For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! 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. FWIW, I called Holley to confirm the part number and they say the Bosch part number if 17212 (also available on Amazon for $64.78). Please consult the Holley Sniper full manual and use this guide for supplemental clarification. And it is timing that is equally critical to best performance and fuel economy. Purely coincidence about the '2300' number. I had an injector fail after a month of running and called the tech line who helped me figure that out. Thanks. 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. Holley Sniper Efi - Mean Chicken Jet Boat Forum I will be calling around to see if I can find someone to help that has experience. Car runs perfect . You really want a bigger engine. 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. It flows 850 cfm and can support up to 650 horsepower. Replacement Sniper and Terminator X O2 Sensor. 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. CTS (Coolant Temperature Sensor) - Reads engine temperature. Menu. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Brand: Holley EFI Emission Code: 4 . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. Finally, do you also recognize that the self-tuning feature of the Sniper EFI may not result in an acceptable configuration for your boat and, as such, may require you to seek professional tuning? Some parts are not legal for use in California or other states with similar regulations. is donald smith still alive; julie grant court tv cheerleader Q1. Everything about the fuel prime shot can be adjusted. Next, the new unit was installed onto the manifold. Its the Holley Pro Jection TBI mentioned by the above poster. The engine floods and it is embarrassing when leaving a lock. Late to the party but here's where mine are installed. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . Add To Cart. Yellow Cold! While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. Sniper EFI Releases new Stealth 4150 Models! Holley EFI 534-199 Wideband Oxygen Sensor Extension Cable Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! 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. Do you offer a USCG fuel pump kit? 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. I have not gone back in to try to fine tune them. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Wiring the Holley Sniper EFI system is equally easy. Description. According to AEM Electronics, a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: Additionally, if an Sniper or Terminator X EFI System has repeated O2 sensor failures and none of the above-listed suggestions seem likely then contact Holley and arrange to have the unit tested. But MAP sensors are very easy to physically implement and are inexpensive. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. p.s. As far as a sensor goes, absolutely nothing. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Sniper EFI Quadrajet Marine. I'll let you know how it works out. I have a 74 bronco, 302, mild cam. Dec 28, 2016. Holley part number 554-155. May 19, 2021. It may not display this or other websites correctly. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . 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. That's great--we look forward to your results! Yes, this is going to be an added expense, however, it will help guarantee your success. 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. Vega$69. 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. Have to replace head gasket. 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. Only show this user. Sorry for the late reply, Douglas. Emissions. Sniper EFI - Holley Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after turn on the ignition.but do not start the engine. This Video Shows Ideal O2 Sensor Placement! Part Number: 510-554-155. 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. 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.. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. They have been working out well for a few years now. Seems to LEARN much faster than the Fitech did. The engines are rated at 170 hp each. The very front would be the safest place. *Possible delays due to Covid-19 click for more information. I had the pink ecu signal wire connected to a bullet connector on the passenger side . Apr 13, 2017. with the extension. Capability Range: Moderate 74 FJ40 confined to the swamp. 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. O2 sensor failure on a Holley Sniper EFI - YouTube Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Does an yone have a pic of the O2 sensor in their exhaust? Followed all the instructions to the letter. When it did keep running, the headers all started to smoke. Register now for free! 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. RPM going up and down , miss firing and backfiring. 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. functioning controller during engine operation. Brand: Holley EFI Emission Code: 5: Material: . I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. Holley efi behavior with bad o2 sensor, safety feature