Thanks for the feedback on this adapter, Donald. EFI Systems based on Holley's world-class Dominator and HP ECU's. Add to Cart . Part# 554-155. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a "criss-cross" pattern (60-80 in.lbs.). 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. If you are not running the latest software stop guessing and go download it. looking at doing the same. Part# 534-199. Prime cannot be adjusted on this old unit. Specs. Look at the bottom.. 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. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. 5. 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. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Advertising . Sort. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. It does not work with the Sniper EFI oxygen sensor. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I have not gone back in to try to fine tune them. When buying the Holley Sniper EFI kit, you've got two basic options. The Sniper EFI throttle-body drops in place of your . It will flood itself out and won't start back, just crank and crank. Sorry for the late reply, Douglas. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. And it is timing that is equally critical to best performance and fuel economy. I am interested in upgrading both engines with Pertronix Ignitor or Ignitor II ignition and the Holley Sniper EFI 2300 and the Howell EFI marine O2 sensor adapter. *Possible delays due to Covid-19 click for more information. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Spray a rag down pretty good with brake cleaner. Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). As far as packaging goes, one comes in a Bosch box, the other in a Holley package. holley efi. The O2 sensor burned out immediately. blue doberman puppies. Ran about 5 seconds and died. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? Price Point: $$$. So please, If you have problems registering or can't log into your account, please. Precisely Adam. Yes, this is an old thread, but it's an old unit. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. However, there's a good chance you will want to add a wideband O2 sensor at some point, in order to give the MegaSquirt more tuning information. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. For a better experience, please enable JavaScript in your browser before proceeding. As far as a sensor goes, absolutely nothing. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. functioning controller during engine operation. 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. Thanks for the compliment--we look forward to your feedback! Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. I would send an Email to Chris at EFIsystempro. Holley's self learning system is a blessing and a curse. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. This really applies to any O2 sensor regardless of EFI system. The wide band O2 sensor is required for initial running and calibration. Holley EFI has the solutions you need to get your project up and running better than ever! Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Sniper EFI 2300 Marine. From there, the idea is that it will self-tune to the requirements of the engine. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Product Q&A . Sniper EFI Releases new Stealth 4150 Models! Powering the Sniper, There are three wires that need to be connected to power on the Sniper, Red and Black main power wires, these need to be run directly to the battery and have a solid connection. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. 10 min read Video. 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. He also explains how to properly install them. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Since the Sniper install, I encountered my second O2 sensor failure so I thought I would try the "Innovate Bung Extender" recommended by a few folks here. I've dunked mine lots of times. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. 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. As always, your results may vary and batteries not included. Adam. Sniper EFI 2300 Marine. MAP Sensors. (REGISTERED USERS DO NOT SEE THIS POST/AD! If I am reading your post correctly you are using two separate o2 sensors when using headers ? With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. Holley EFI Usb/Can Harness, Sniper Tbi. The very front would be the safest place. The clamp-on that came with mine wasnt a good fit on my 2" pipe. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. 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. Everything about the fuel prime shot can be adjusted. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. If you have long tube headers, mount the sensor approximately 6-10" after the collector. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. $108.95. 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. I've installed several of these adaptive EFI's on cars with great success. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. Has anyone run an O2 sensor in an EFI on a marine engine? 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. 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. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. 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)? My hand is holding the connector to the sensor. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. I also capped off the regulated return line with a hose, clamps, and chamfering bit. Maybe going all the way to the front is the way to go? For a better experience, please enable JavaScript in your browser before proceeding. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. I will keep the in-line pump for a spare. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Sniper EFI 4500 Marine. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. A forum community dedicated to performance boat owners and enthusiasts. I have not yet got it figured out. non biased Shelby Cobra related site! 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. Could show a lean condition when in fact it really isn't. 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. Holley sent him a new one for free. 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? He had one there that was run on a dyno then the fuel map was set and shipped back. Don't know about HP increase, with the QFT 750 it would turn a 212/4.0 combo to about 3950 to 4000, the Sniper turns it to 4000 to 4100. Thanks again for writing! 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. Not sure how well the sensor likes being that close to the port. Copyright 2022 Holley Performance Products, Inc. All right reserved. It looks like another season has come and passed by without the answer you wanted on this.I am impressed that you made the leap into marine fuel injection but you have experienced the same problem that everyone else who has tried this has faced. 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. I installed a holley sniper kit. I received my replacement TPS and O2 sensor. $132.95. 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. My bet based on longer pump run, to make pressure, you have a leaking injector. 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. 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? I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Affiliate. 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. They have been working out well for a few years now. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. 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. 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. What motor is this on? 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . The light shines in the darkness, and the darkness has not overcome it. $102.95. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. AFR was 19 area. 2014 FJ Cruiser - White - 4X4 - Loaded - . All sensors are tested to ensure they accurately report critical engine data to the . Capability Range: Professional 29. 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. I recommend popping for the Master . Is the O2 sensor on the dyno must have a very long pipe extending past where it is positioned or backwash from the room air will violate the readings as well as any header leaks. So I bought the progressive linkage but you then have . I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. I will keep the replacements as spares. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. I think installing a wide band O2 sensor in the manifold(s) is a great idea. I have not had it on the dyno with the sniper, but would guess probably about 400 to 410 hp and well over 500 tq.I did use the holley pump that came with the sniper. Anything else is going to be a frustrating recipe for for failure. . Sniper EFI 4bbl Marine. 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, Greatest struggle is the shift interrupt. It's hallmark is its simplicity--but in this case it is also it's shortcoming. I had the pink ecu signal wire connected to a bullet connector on the passenger side . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Free ground shipping regardless of order size! The fuel lines and fittings are 3/8s with 8AN fittings and everything on the 60 requires 5/16 fuel line with 6AN fittings) Holley Sniper EFI 550-849 Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish. But you still risk a little water running back at low Rs. The spark must be manually tuned. You are using an out of date browser. Jun 7, 2021. Add To Cart. CUSTOM ART FOR CUSTOM NEEDS. Dec 28, 2016. Capability Range: Advanced Shop Oxygen Sensors at Summit Racing. Thanks for that, Danny. 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. 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. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. I was mocking it up at the time. Then they had it repaired and back to me in 5 business days. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. test the sensor.. for a basic pass/fail of the sensor. I hope that the next F/2F header is more O2 sensor friendly. 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. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. The engines are rated at 170 hp each. 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. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. . A 90-degree V-6 has three shared crankpins set 120 degrees apart. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. In Stock. Has been since the 80's. Stock manifolds? Part# 550-511. 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. Sniper EFI Quadrajet Marine. Q3. I'm using the NTK sensor. . 74 FJ40 confined to the swamp. 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. excessively rich mixtures), Mechanical shock (e.g. I have a 74 bronco, 302, mild cam. When problem-solving this type of issue, consider when and how you could use a work-around. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! 3. Holley Sniper O2 sensor replacement. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. It will crank and run great for 2-15 seconds then die. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Full time feedback from the sensor is what the computer uses to refine the fuel table. Stay up to date with the latest releases, events, promotions and more. It just means that if you are thinking you'll install this, crank it, and pull away from the dock with complete success you might be in for some disappointment. It works fine. Wondering how you are progressing with this? 02/25/2020. Is this a viable upgrade for my boat? You must log in or register to reply here. EFI System Pro had everything I needed for my EFI upgrade. Previously, none of Holley's throttle body injection (TBI) systems, such as the Terminator EFI were USCG approved (even though the HP and Dominaor ECU's themselves are.) . Runs like a champ now. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Other? Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. I'll let you know how it works out. 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 O2 sensor burned out immediately. The plan is to 'learn' a fuel\Timing curve with a closed loop. Advanced throttle body injection systems capable of transmission control and more. When either of these operating temperature ranges is exceeded, the sensor can no longer be . :-), I started using OMC and Volvo Penta pumps for my conversion. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Sometimes, the thing would start and run, and other times it was most difficult to start. Not always the case with a boat. $43 per night (Latest starting price for this hotel). There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. With a bad TPS you will have to manually prime to try and get it . Got a picture? I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon.

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