running holley sniper without o2 sensor

Holley EFI Oxygen Sensor. 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. 100% identical. Thanks again for writing! Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Dec 28, 2016. 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. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. . The ones in the Bosch box come without warranty. In Stock. It doesn't even mean that you can't do it. Have engine apart and head checked and cleaned at machine shop. Register now for free! My boat is still in winter storage. holley efi. 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. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Then if that doesn't work call the tech line they are great! USCG approval is certainly worth careful consideration, as being on a boat that catches on fire is even more serious than being in a car that catches on fire. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Hopefully this one lasts longer than the original. The test run was great, they have never run so well even when they were new with carbs. Part# 534-199. I have a 74 bronco, 302, mild cam. 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. Part# 50-5009QFT. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. PS, Once someone has a good 270/350 tune, everyone can use it. There was a 1.5 point difference in afr between banks. Add to Cart . 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. Add To Cart. 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. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. Holley EFI. I have searched thru the forum as much as I can, with not much luck. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. I have a 74 bronco, 302, mild cam. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. 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. Miami, FL. I purchased the Holley HP MPFI system and went to the lake with it. 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. Right now I'm just using the AEM Wideband sensor to monitor Air/Fuel ratio but hope to use it in an EFI system soon. That sounds like one solution. 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. Sniper EFI Quadrajet Marine. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Other? I am happy with Holleys no hassle replacement of the parts. 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. Sniper EFI 4bbl Marine. Yes, this is an old thread, but it's an old unit. The engine RPM when closed loop o2 will begin. JavaScript is disabled. I think installing a wide band O2 sensor in the manifold(s) is a great idea. OP, the Edelbrock system looks to use the same basic sensors as the Holley sniper system: TPS, MAP and O2, plus a few supporting sensors. 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. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Once the tune is complete, the O2 sensor can be defeated or . And it is timing that is equally critical to best performance and fuel economy. All of the wiring begins at the throttle body and connects outward from there. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Ordered another dominator Bosch from Holley and it matches perfect. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Only a few hours on the motor but so far so good. I've installed several of these adaptive EFI's on cars with great success. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Staff Writer. What Is Pinion Offset, And How Does That Affect You? I just discovered that was the case with my Fitech. 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? A replacement clamp on would be an easy change out. About your only location is in that short area from the log to the port face. 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.) But you still risk a little water running back at low Rs. EFI EFI kit electronic fuel injection. 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. Holley recommends a 3/8" fuel supply line. And the relay and fuse were mounted along the firewall. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Free ground shipping regardless of order size! check out the. But it is going to be a little tricky. I installed a holley sniper kit. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Sent unit back to Holley. 2. Capability Range: Moderate CUSTOM ART FOR CUSTOM NEEDS. Brand: Holley EFI Emission Code: 5: Material: . You must log in or register to reply here. Still needs a EFI pump and return line. 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. Everyone else was backordered several months. Precisely Adam. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. Q3. 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. So much it could be. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. So far so good. For the most part, the small harness is plug-and-play. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. 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 fuel pump question is the tough one. Yellow Init In First shown for an instant when the system is powered on. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. So please, If you have problems registering or can't log into your account, please. I will be calling around to see if I can find someone to help that has experience. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Maybe my manifolds leaked the inside between the snail and the log?? 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. When buying the Holley Sniper EFI kit, you've got two basic options. Have to replace head gasket. It's hallmark is its simplicity--but in this case it is also it's shortcoming. 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. 4. Tech Resources. 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.). Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. Hi all, i'm contemplating doing a sniper quadrajet swap onto my volvo penta 5.7 GL 2bbl holley motor in my 1997 cobalt 200 with the DP-S outdrive. Mike. 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. In order to do this, it heavily relies on proper O2 sensor placement. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Then if you are do you just wire the o2 sensors in parallel or do these EFI kits have inputs for more than one sensor. 10 min read Video. CTS (Coolant Temperature Sensor) - Reads engine temperature. You are using an out of date browser. If this could be disabled it would be much better. . By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Otherwise I have to check for a place in my gasoline tank to put the lines in. Sniper EFI 2300 Marine. It may not display this or other websites correctly. I'm 3" down from the bottom of the flange to center of bung. 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 engines are rated at 170 hp each. The spark must be manually tuned. I know from some of the other posts, there have been WBO2 sensor issues. If this is a first time effort, find a tuner in your area with marine experience. 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. Some logs have water up to just short of the port. My question is concerning what happens a year later, when I have a top-end swap . After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. Capability Range: Advanced 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. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Affiliate. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 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 have tried several different settings to get it going, no luck. Has anyone run an O2 sensor in an EFI on a marine engine? 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. Holley EFI has the solutions you need to get your project up and running better than ever! 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. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. Car runs perfect . 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. 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. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Installed the sniper/MSD combo on my mildly built 460 KEM. Look at the bottom.. Are you holding your RPMs back with the MSD for some reason? I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. 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. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 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. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. The spark must be manually tuned. MAP Sensors. It's a compact HP pump and cooler assembly. 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. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt. Mark Twain, The goal in life: To die young as late as possible. I will be starting mine up this month, I hope it goes well, good luck to you. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . 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. Capability Range: Advanced When it did keep running, the headers all started to smoke. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Sniper EFI 4bbl Marine. Use a return fuel line. you don't want to read that loss. 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. It works fine. 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. 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 . Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Stay up to date with the latest releases, events, promotions and more. Part# 554-155. You should then have at least 18-24" of pipe after the sensor. This was for MPFI. Other countries likely have simmilar approval processes for marine engines. I'll let you know how it works out. You will still get some water on the engine side of the snails, mainly at low Rs. 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. Note the temperature sensor mounted on the back of the driver side head in the above photo. I was mocking it up at the time. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! 534-199. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . May 19, 2021. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Can more detail be provided? After discussing it in this thread and talking with Holley's tech support, I decided . This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Conditions when closed loop o2 should be turned off. Now the lower cost Holley Sniper advertised for March 31 2016. 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. The World's largest Part # 554-155. Stock manifolds? My bet based on longer pump run, to make pressure, you have a leaking injector. Be sure to disable autotune and remove the O2 sensor before it dies. Yes, this is going to be an added expense, however, it will help guarantee your success. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 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. EFI Systems based on Holley's world-class Dominator and HP ECU's. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. 3. EFI Systems based on Holley's world-class Dominator and HP ECU's. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. I want to register an account for free right now! We also use content and scripts from third parties that may use tracking technologies. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Sensors that are installed in an exhaust must be connected to a properly blue doberman puppies. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. Each engine has the Holley marine 2 barrel carburetor. Increasing efficiency is always a good idea. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. 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. Part # HM206. 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. I've seen O2 sensors in water jacketed headers that have worked fine for years. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. 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. I hope that the next F/2F header is more O2 sensor friendly. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Welcome to Club Cobra! I was thinking aluminum heads would run it up closer to 5,000 rpm. Part# 550-511. 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. Description. The Holley Super Sniper High Performance EFI kit comes with a coolant temperature sensor and an O2 sensor, both of which must be used for the EFI to work properly. Much of the system is encased right inside the throttle bodyand that includes the ECU. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Features: . While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. #1. 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. AFR was 19 area. Capability Range: Advanced 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. Free ground shipping regardless of order size! Sniper EFI Installation Guide. 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). Yellow Cold! Greatest struggle is the shift interrupt. : For registered members this ad will NOT show. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. A forum community dedicated to performance boat owners and enthusiasts. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Holley EFI Usb/Can Harness, Sniper Tbi. 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. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. Replaced and gapped to .45 all spark plugs. 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). 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. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . 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. The O2 sensor burned out immediately. What is your fuel pressure at the carb during crank? 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 . I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. 02/25/2020. The Sniper will do that. 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. Bolt on 4150 Flange Carburetor Replacement. Maybe this one has a shorter cable? Some parts are not legal for use in California or other states with similar regulations. That is defacto step one in trouble shooting fuel injection systems. 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. As far as a sensor goes, absolutely nothing. They have been working out well for a few years now. Attempted to make a parts run in my 1990 Third gen Chevy Camaro with a small block chevy 350 with flowmaster mufflers.I believed the issue in this video to b. You can selectively provide your consent below to allow such third party embeds. 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. 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. non biased Shelby Cobra related site! quick fuel. If you have long tube headers, mount the sensor approximately 6-10" after the collector. It only runs rich on start up for a second due to the prime, after start it runs great. Sorry for the late reply, Douglas. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. May 1, 2018 They want you to angle it to keep it from fouling. Anti-Seize pre-applied to sensor threads. With a bad TPS you will have to manually prime to try and get it . 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). I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet?

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running holley sniper without o2 sensor