I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Distributor and ignition box? I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? Sniper EFI 4bbl Marine. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. But MAP sensors are very easy to physically implement and are inexpensive. Good luck! Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. 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? Miami, FL. Stay up to date with the latest releases, events, promotions and more. Any word on this? I have not gone back in to try to fine tune them. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. you don't want to read that loss. Jan 20, 2019. Then if that doesn't work call the tech line they are great! Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Seems to have more low end tq and is much smoother power through out the rpm range. The Sniper will do that. Thanks for that, Danny. running holley sniper without o2 sensor - plural.works I had an injector fail after a month of running and called the tech line who helped me figure that out. It may not display this or other websites correctly. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Sniper EFI 2300 Marine. Price Point: $$$. Also the progressive link. It will not fit on round or oval risers without a suitable flat area. Hello Chris,Ontario's boating season is about to launch for another year.Do you have any good news to add to your above article, any new marine friendly TBI products?In '08,I installed a Holley 21-700 TBI with the o2 mounted in the manifold to Holly specs. You will still get some water on the engine side of the snails, mainly at low Rs. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. It is possible for the ECU to have an internal failure that can kill O2 sensors. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Purely coincidence about the '2300' number. Then they had it repaired and back to me in 5 business days. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! The Tech Tips and discussions are also great! 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Free ground shipping regardless of order size! Converting Marine Engines to EFI | EFI Pro Hangout | General Studies Holley sniper help!!!! | ClassicBroncos.com Forum I was thinking aluminum heads would run it up closer to 5,000 rpm. The in tank pump is quieter, will normally run cooler and should last longer. Make sure to put anti seize on the threads. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 10 min read Video. Wideband Oxygen Sensor Extension Cable. 100% identical. Only a few hours on the motor but so far so good. Q2. Vega$69. 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. With a bad TPS you will have to manually prime to try and get it . The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. From there, the idea is that it will self-tune to the requirements of the engine. You'll also notice that the firing order is 1-6-5-4-3-2. Items 1 - 21 of 21 Items. 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. Holley EFI 554-155 Holley EFI Oxygen Sensor 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. Q3. Yes, this is an old thread, but it's an old unit. Holley EFI has the solutions you need to get your project up and running better than ever! You are using an out of date browser. Terminator X O2 sensor Off the shelf replacement? Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. That sounds like one solution. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. The target A/F value based on load or MAF cfm, and engine speed. Add to Cart . I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. In order to do this, it heavily relies on proper O2 sensor placement. Taking a look at the holley manual I am thinking about drilling and tapping the front exhaust port on the log for the O2 sensor. The spark must be manually tuned. 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. Much of the system is encased right inside the throttle bodyand that includes the ECU. Specs. It will flood itself out and won't start back, just crank and crank. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! Installing MegaSquirt in Parallel With the Stock ECU I've installed several of these adaptive EFI's on cars with great success. The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. Add To Cart. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Tech Resources. 534-199. Be sure to disable autotune and remove the O2 sensor before it dies. : For registered members this ad will NOT show. If the indicator reads "LOW Err" double check the connection to the CTS. Sensors that are installed in an exhaust must be connected to a properly Categories. 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. This doesn't mean it can't be done. 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. 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. Also some tips on preventing O2 sensor damage Systems that were already designed for marine efi. If you have long tube headers, mount the sensor approximately 6-10" after the collector. Add to Cart . I am looking for a TBI with full sensors, mainly atmospheric for Sept and Oct and a Idle Air sensor for warm starts.I welcome your thoughts.Regards, Holley recommends a 3/8" fuel supply line. 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. $102.95. I will be calling around to see if I can find someone to help that has experience. Holley EFI Sniper O2 Sensor Install - YouTube That is defacto step one in trouble shooting fuel injection systems. If this is a first time effort, find a tuner in your area with marine experience. In the case of the car, you can generally get out and walk (run?) Everything about the fuel prime shot can be adjusted. Still trying to find more info on electronic conversion, only found Pertronix replacement for points so far.. What TBI, fuel pump, sensors and ECM computer are you using? O2 sensors are water proof. But you still risk a little water running back at low Rs. I will keep the in-line pump for a spare. My boat is still in winter storage. 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. Mike. I installed a holley sniper kit. AFR was 19 area. . (If I am incorrect I heartily invite your comment at the bottom of this article!) 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. The Sniper EFI throttle-body drops in place of your . 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. . The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. I've dunked mine lots of times. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Below are the most common sensor usages in a Holley EFI system, however pressure transducers can be applied to any form of pressure in an automotive system, from oil pressure, to exhaust back pressure, and the data gathering usages in racing can get quite creative. 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. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . 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 . 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. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. They are the only ones got me a holley usb to can cable fast. Features: . 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. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. :-), I started using OMC and Volvo Penta pumps for my conversion. Holley EFI Oxygen Sensor. MAP Sensors. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. 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. Well an update on the Sniper install. Sensors that are installed in an exhaust must be connected to a properly functioning controller during engine operation 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. Anything else is going to be a frustrating recipe for for failure. Maybe going all the way to the front is the way to go? I am a competent mechanic and I have checked all the usual suspect items. I want to register an account for free right now! 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. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Capability Range: Professional EFI System Pro had everything I needed for my EFI upgrade. 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. Fine tuned the timing to 12-15 degrees. Adam. Its the Holley Pro Jection TBI mentioned by the above poster. holley efi. The engine RPM when closed loop o2 will begin. Did a test startup on my new sniper by running the power wire to battery + and not using the o2 sensor.I also capped off the regulated return line with a hos. Holley Sniper EFI - Page 3 - Offshoreonly.com I installed it without O2 sensor, adjust on the fly. functioning controller during engine operation. Sniper EFI Releases new Stealth 4150 Models! pull the sensor out of the exhaust. It has about 18 hrs to date and is working great. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. 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. Increasing efficiency is always a good idea. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. is donald smith still alive; julie grant court tv cheerleader Q1. Now the lower cost Holley Sniper advertised for March 31 2016. Late to the party but here's where mine are installed. My hand is holding the connector to the sensor. 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. YES! #1. 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. 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. Just a rumor. Capability Range: Moderate 29. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: You must log in or register to reply here. 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. 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. See Details. Dec 28, 2016. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. 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. 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! This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Holley EFI Oxygen Sensor. JavaScript is disabled. PDF Holley Sniper Installation Supplement I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Full product line and accessories at excellent pricing. This combines the Sniper EFI Self Learning Throttle Body, with an easy to install In-Tank Retrofit Returnless Module, 20 ft of Earl's Vapor Guard Fuel Hose, and the required fittings. I installed a holley sniper kit. Add to Cart . When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. The Holley Sniper system sells for $999.95, installs in under 2 hours, and requires only an O2 sensor, a temp sensor (both included), an electric return-style fuel pump, and four-wires to connect.. Quote Reply Topic: Holley Sniper Posted: Jan/05/2022 at 2:01pm . This is great information that can only get you closer to an ideal solution. Full time feedback from the sensor is what the computer uses to refine the fuel table. You are using an out of date browser. Apr 13, 2017. with the extension. Part # HM206. But for just over $10 and two simple configuration changes you can switch to a progressive linkage that opens only the two primary barrels at first and then brings in the secondary barrels at a later point. Innovate Motorsports HBX-1 Bung Extender. Is Holley working on a complete marine package or planning to in the future? (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. 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. Still needs a EFI pump and return line. You must log in or register to reply here. This page was generated at 08:35 AM. . Is this a viable upgrade for my boat? There is no problem getting this tuned and then running open loop. Sorry for the late reply. 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. I have a 74 bronco, 302, mild cam. Yes! Copyright 2022 Holley Performance Products, Inc. All right reserved. EFI is the wave of the future. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. Staff Writer. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. 5. *Possible delays due to Covid-19 click for more information. It does not work with the Sniper EFI oxygen sensor. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Stay up to date with the latest releases, events, promotions and more. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. On my system, I machined in the O2 sensor right between the snail and the manifold of a . 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. For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. Free ground shipping regardless of order size! I will keep the replacements as spares. With the sniper as long as you locate the o2 sensor where it gets good feedback and stays dry long enough to get a good tune you could lock it so even if the o2s get wet it still runs good. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! Holley EFI requires several pressure inputs in order to run an engine. To take advantage of all the site features, please take a moment to register. What Is Pinion Offset, And How Does That Affect You? 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. 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. Have engine apart and head checked and cleaned at machine shop. No one cares about your buddies old antiquated garden hose technology. 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. Car runs perfect . Note the temperature sensor mounted on the back of the driver side head in the above photo. 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. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . And it is timing that is equally critical to best performance and fuel economy. I have a 74 bronco, 302, mild cam. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. I have a boat with twin 3.7 Mercruisers. It will crank and run great for 2-15 seconds then die. 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. This motor would probably turn the berk to 6 grand and blow it out from a stop.Motor dyno'd on a carb @389 hp @ 4700rpm and 497 tq @3500. May God's grace bless you in the Lord Jesus Christ. He had one there that was run on a dyno then the fuel map was set and shipped back. 2014 FJ Cruiser - White - 4X4 - Loaded - . Holley Sniper EFI Returnless Master Kit - Black Ceramic Homemade body parts replace the originals as they rot away but it's a 40 on the inside. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications.
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