It appears that its a tuning issue. Not sure how well the sensor likes being that close to the port. Will I be able to control my ignition timing with the Sniper? Conditions when closed loop o2 should be turned off. I had questions on the suggested "Marine O2 Sensor Adapter" from Howell EFI (https://howellefi.com/product/adaptor-o2-sensor-for-marine-use/), but when I look to the pictures, I understand how it will work. So please, If you have problems registering or can't log into your account, please. Is this a viable upgrade for my boat? 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! If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Found out that it was due to rfi/emi. Shop Oxygen Sensors at Summit Racing. #1. (REGISTERED USERS DO NOT SEE THIS POST/AD! Seems to LEARN much faster than the Fitech did. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Greatest struggle is the shift interrupt. The sniper fit perfectly on the intake. Some parts are not legal for use in California or other states with similar regulations. 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. 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. 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. I am a competent mechanic and I have checked all the usual suspect items. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. EFI is the wave of the future. functioning controller during engine operation. RPM going up and down , miss firing and backfiring. Runs like a champ now. Bolt on 4150 Flange Carburetor Replacement. Items 1 - 21 of 21 Items. 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. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I have searched thru the forum as much as I can, with not much luck. I think I could run more boost but it's a real hand full right now. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. Miami, FL. In Stock. Sadly, no. Sniper EFI 4bbl Marine. My question is concerning what happens a year later, when I have a top-end swap . Well an update on the Sniper install. From there, the idea is that it will self-tune to the requirements of the engine. Add To Cart. Precisely Adam. 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. It will not fit on round or oval risers without a suitable flat area. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . THen you have to determine if you want 02 readings from one cylinder, or in the case you just mentioned mostly one cylinder, average of 4 cylinders on one bank or the other, or average of all 8 cylinders. EFI EFI kit electronic fuel injection. Joe, where did you end up installing the o2 sensor on your setup? Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: You must log in or register to reply here. When either of these operating temperature ranges is exceeded, the sensor can no longer be . The engines are rated at 170 hp each. Fuel economy went from 12.5 to 13.5 gph to 10 gph. Jun 7, 2021. Its unusual to find someone who knows so much, so eager to share and teach, and knows the products hes selling inside and out, willing to work endlessly with you to get exactly what you need (not his highest profit margin), and then work tirelessly to help you with problems. I just discovered that was the case with my Fitech. 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. : For registered members this ad will NOT show. Innovate Motorsports HBX-1 Bung Extender. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. With a bad TPS you will have to manually prime to try and get it . As far as a sensor goes, absolutely nothing. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. I think installing a wide band O2 sensor in the manifold(s) is a great idea. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. 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. For a better experience, please enable JavaScript in your browser before proceeding. 4. I have searched thru the forum as much as I can, with not much luck. Yes, this is an old thread, but it's an old unit. 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. 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. I have also picked up another .5 gallons per hr to about 9.25 gph. Phil said water would still get up over the snail and knock out the sensor. 74 FJ40 confined to the swamp. Master ASE tech since 91. 534-199. For the most part each engine wants a bit of its own timing set-up IMHO, you boat owners with a 270HP 350 (or any other config) may want 350HP but upgrading it to that level will reduce or eliminate reliability. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Add to Cart . Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Are you running the entire system? Price Point: $$$. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to YES! Could show a lean condition when in fact it really isn't. 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. I was mocking it up at the time. I'm guessing by snail, that's another name for the riser? Capability Range: Professional Bolt-on carburetor style EFI for your classic car or truck. 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)? It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. It may not display this or other websites correctly. The plan is to 'learn' a fuel\Timing curve with a closed loop. 10 min read Video. Capability Range: Advanced 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. Now the lower cost Holley Sniper advertised for March 31 2016. To close this one out, below is a photo of where I installed the O2 bung. This is great information that can only get you closer to an ideal solution. Increasing efficiency is always a good idea. holley efi. Installed the sniper/MSD combo on my mildly built 460 KEM. Holley's self learning system is a blessing and a curse. I've seen O2 sensors in water jacketed headers that have worked fine for years. Its the Holley Pro Jection TBI mentioned by the above poster. Capability Range: Professional It works fine. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. I installed a holley sniper kit. Initial Calibration in Basic Configuration. Full time feedback from the sensor is what the computer uses to refine the fuel table. When it did keep running, the headers all started to smoke. The target A/F value based on load or MAF cfm, and engine speed. I know from some of the other posts, there have been WBO2 sensor issues. Followed all the instructions to the letter. Only a few hours on the motor but so far so good. 10 min read. I tried holley tech support, no answer and put on hold for hours. 2014 FJ Cruiser - White - 4X4 - Loaded - . Features: . JavaScript is disabled. Will I be able to run both systems off of one fuel pump? That's great--we look forward to your results! Running? If it's working to prolong the life of the sensor in the AEM Wideband kit then there is no reason to believe it wouldn't work with any other sensor. . JavaScript is disabled. Anything else is going to be a frustrating recipe for for failure. Sensors that are installed in an exhaust must be connected to a properly Replaced and gapped to .45 all spark plugs. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery. I want to register an account for free right now! Staff Writer. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! EFI EFI kit electronic fuel injection. We may earn a small commission from affiliate links and paid advertisements. This Video Shows Ideal O2 Sensor Placement! However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. $43 per night (Latest starting price for this hotel). Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! If I am reading your post correctly you are using two separate o2 sensors when using headers ? OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. The throttle body has a built in fuel pressure regulator set at 58.5 psi. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Holley recommends a 3/8" fuel supply line. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Some logs have water up to just short of the port. It's hallmark is its simplicity--but in this case it is also it's shortcoming. The O2 sensor burned out immediately. 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 hose, clamps, and chamfering bit.In the settings I chose closed loop disabled (set to open loop) and also set learn mode to disabled. For gourmands, night markets not only offer scrumptious small . And who can blame them? Sorry for the late reply. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. For the most part, the small harness is plug-and-play. Idle and off-idle performance (particularly as the engine goes into gear.) Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. They have mods that help. 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. What you are able to accomplish with a Sniper is done exclusively through the setup wizard application on the 3.5-inch handheld.The Temrinator is designed to be set up with it's own setup wizard on the same 3.5-inch handheld display--but since it has a stand-alone ECU, it can also be fully programmed via the Holley laptop software. Sniper EFI 2300 Marine. For now I have a genuine bosch O2 and Standard Automotive TPS installed. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Holley EFI has the solutions you need to get your project up and running better than ever! 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. Did you use the Holley fuel pump and have you had any issues with it? 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). There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. You have to angle it to help the throttle cable get around the booster. Has been since the 80's. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Are you holding your RPMs back with the MSD for some reason? As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. Specs. Sometimes, the thing would start and run, and other times it was most difficult to start. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. 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. MAP Sensors. I will let you know what happens. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Without the engine running, AFR will read 35.6 The fuel pump will run off a relay in the sniper harness (blue wire) pink wire gets switch/run power to the relay. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Everyone else was backordered several months. But this also makes me wonder what you did for the O2 sensor. Still needs a EFI pump and return line. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. May God's grace bless you in the Lord Jesus Christ. Product Q&A . You are using an out of date browser. Prime cannot be adjusted on this old unit. well I have installed the Sniper on my 460 KEM (Ford) marine motor. Stay up to date with the latest releases, events, promotions and more. CTS (Coolant Temperature Sensor) - Reads engine temperature. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. If you are not running the latest software stop guessing and go download it. I installed one also on mercruiser 260 hp. looking at doing the same. pull the sensor out of the exhaust. Part # HM206. 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. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. p.s. Sep 14, 2021. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. . Also the progressive link. Thinking about this I think this will work very fine! I installed it without O2 sensor, adjust on the fly. I recently installed the sniper setup on my stock 71 duster 340 4 speed. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. 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. If the indicator reads "LOW Err" double check the connection to the CTS. Holley 554-100 NTK Wideband Oxygen Sensor. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Supports up to 650hp with Four 100 Lb/Hr Injectors! Other? 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. :-), I started using OMC and Volvo Penta pumps for my conversion. . 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. . The original Holley Sniper instructions are available on the Holley website if you have misplaced them. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. $119.95. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. 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. QFI-500 Oxygen Sensor. We also use content and scripts from third parties that may use tracking technologies. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. 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.