Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette I just discovered that was the case with my Fitech. There can be leftover debris from manufacturing that have been washed down and are now clogging one. I am considering the Daytona Sensors Ignition module. It is possible for the ECU to have an internal failure that can kill O2 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. 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. Have engine apart and head checked and cleaned at machine shop. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. 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. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. 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. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Boats don't cruise at 60mph up and down hills. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 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. EFI Systems based on Holley's world-class Dominator and HP ECU's. They have mods that help. Doesn't look like it will have an O2 sensor. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector.
Holley efi behavior with bad o2 sensor, safety feature I am a competent mechanic and I have checked all the usual suspect items. In Stock. Let me know how I can be of assistance. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Spray a rag down pretty good with brake cleaner. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Stay up to date with the latest releases, events, promotions and more.
Holley Sniper EFI Returnless Master Kit - Black Ceramic 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, 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. I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. EFI System Pro had everything I needed for my EFI upgrade. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Add to Cart . Items 1 - 21 of 21 Items.
My hand is holding the connector to the sensor. A third option would be to run your EFI system without an O2 sensor at all. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. $5 Off Your $100 Mobile App Purchase . Installed the sniper/MSD combo on my mildly built 460 KEM. . . -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? Holley EFI has the solutions you need to get your project up and running better than ever! I installed a holley sniper kit. 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. Sorry for the late reply, Douglas.
Holley Sniper O2 sensor replacement - Club Cobra i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Douglas Cline. Add to Cart . In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. This doesn't mean it can't be done.
Also in Tools, Shop Equipment & Chemicals, Cataclean - Fuel and Exhaust System Cleaner, Cataclean Diesel - Fuel and Exhaust System Cleaner, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets, Holley EFI CAN to USB Dongle - Communication Cable, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Holley EFI Terminator X Wideband Adapter Harness, Earl's Oxygen Sensor Weld Fitting (Weld Bung) - Steel. I would prefer to run this brand new Holley EFI system in a closed loop, not set the fuel map, and use the O2 sensor as only a sensor. EFI is the wave of the future. Got a picture? 534-199. Anything else is going to be a frustrating recipe for for failure. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Holley Sniper EFI Oxygen Sensors 554-155 These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. I will get a new 02 sensor before I swap back to the orange box. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. But you still risk a little water running back at low Rs. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. 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. Each engine has the Holley marine 2 barrel carburetor.
Be sure to disable autotune and remove the O2 sensor before it dies. Holley 554-100 NTK Wideband Oxygen Sensor. Bolt-on carburetor style EFI for your classic car or truck. When buying the Holley Sniper EFI kit, you've got two basic options. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Advertising . 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. 5. Throttle body mounted ECU - no extra boxes to mount. well I have installed the Sniper on my 460 KEM (Ford) marine motor. 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. I have a 74 bronco, 302, mild cam. Holley EFI Oxygen Sensor. Fortunately, it turns out there are some options.
Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. I will keep the in-line pump for a spare. It could be an instant fix. Yes, this is going to be an added expense, however, it will help guarantee your success. QFI-500 Oxygen Sensor. Warranty Information. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Brand: Holley EFI Emission Code: 4 . Yes! If this could be disabled it would be much better. I would send an Email to Chris at EFIsystempro. Thanks for the heads up. looking at doing the same. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. Part# 550-511. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Great Article. Seems to have more low end tq and is much smoother power through out the rpm range. It may not display this or other websites correctly. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. Add to Cart . . Bolt-on carburetor style EFI for your classic car or truck. May 1, 2018 They want you to angle it to keep it from fouling. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. I installed a holley sniper kit. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. 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. 29. For gourmands, night markets not only offer scrumptious small . Holley EFI Usb/Can Harness, Sniper Tbi. If you find that please let us know. running holley sniper without o2 sensorplymouth township mi police scanner. You should then have at least 18-24" of pipe after the sensor. On EFI systems such as Holley's Sniper, all of the EFI sensors (except for the O2 and coolant temperature sender) are mounted snuggly in the throttle body. Holley EFI Oxygen Sensor. 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. Only show this user. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. The target A/F value based on load or MAF cfm, and engine speed. 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 I bought the progressive linkage but you then have . Maybe going all the way to the front is the way to go? Part # 554-155. Emissions. 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. Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. Then if that doesn't work call the tech line they are great! To close this one out, below is a photo of where I installed the O2 bung. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. But you have to get it tuned. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! I have a 74 bronco, 302, mild cam. Free ground shipping regardless of order size! On my system, I machined in the O2 sensor right between the snail and the manifold of a . Sniper EFI 2300 Marine. Dec 28, 2016. It should be pretty straight forward what each of these values do. Part# 50-5009QFT. To take advantage of all the site features, please take a moment to register. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Adam.
Holley Sniper EFI - Page 3 - Offshoreonly.com Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. It may not display this or other websites correctly. #1. Will I be able to control my ignition timing with the Sniper? 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? The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. What Is Pinion Offset, And How Does That Affect You? Holley's self learning system is a blessing and a curse. 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. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it.
Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. I'm 3" down from the bottom of the flange to center of bung. Affiliate.
WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com 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. 2. What exhausts are the best? 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. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. So there is at least some probability of success. - You are currently viewing the forums as a GUEST. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. 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. In order to do this, it heavily relies on proper O2 sensor placement. pull the sensor out of the exhaust. 100% identical. Advanced throttle body injection systems capable of transmission control and more. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Find a lower price anywhere and we'll beat it by 5%! http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. He had one there that was run on a dyno then the fuel map was set and shipped back. p.s. Thinking about this I think this will work very fine! I am a competent mechanic and I have checked all the usual suspect items. It has about 18 hrs to date and is working great. Sniper EFI 4500 Marine. 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. Could show a lean condition when in fact it really isn't. This was for MPFI. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. The engine RPM when closed loop o2 will begin. My boat is still in winter storage. Super helpful and knowledgeable. Holley Sniper EFI Wideband Oxygen Sensor Part Number: 510-554-155 Click image to zoom $125.99 More than 10 available Lowest Price Guarantee Sniper EFI Wideband Oxygen Sensor Replacement Part for Holley Sniper EFI and Terminator X Systems Bosch LSU 4.9 See more product details Free Shipping - Ships Today QTY Add To Cart Add to Wish List The Sniper needs a "clean" 12V wire that is hot in Start and Run.
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. 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. Sniper EFI Quadrajet Marine.
Terminator X O2 sensor Off the shelf replacement? .
I tried holley tech support, no answer and put on hold for hours. 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 . 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). 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. 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. 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. We may earn a small commission from affiliate links and paid advertisements. For a better experience, please enable JavaScript in your browser before proceeding. Well an update on the Sniper install. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. 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. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! In this case, the prime shot is good for cold, but too much for warm. holley sniper efi Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish $1,475.95 Part# 550-511K holley efi 100 PSI Stainless Pressure Sensor $155.95 Part# 554-102 Are you waiting to convert your carbureted vehicle to Sniper EFI, but don't like the idea of mounting an external fuel pump?
Sniper EFI Releases new Stealth 4150 Models! When problem-solving this type of issue, consider when and how you could use a work-around. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. 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. 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. A forum community dedicated to performance boat owners and enthusiasts. All I can say is it made a completely different motor out of the 460, 39 degrees out and starts within 2 revolutions power is super smooth throughout the rpm range (idle to 4100rpms 212 Hamilton with 4.0 turbo impeller) has about 6 hrs of learn time. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Price Point: $$$. Visit their website for more details. Yellow Cold! You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. I'm guessing by snail, that's another name for the riser? 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. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Did you use the Holley fuel pump and have you had any issues with it? I installed the adapter and elbow so it's at an angle above the entry point. It's a compact HP pump and cooler assembly.
Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel Without Headers Steamers location (above) is perfect, up close to the engine where you . Replacement Sniper and Terminator X O2 Sensor. Wiring the Holley Sniper EFI system is equally easy. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . I have a boat with twin 3.7 Mercruisers. Holley EFI has the solutions you need to get your project up and running better than ever! excessively rich mixtures), Mechanical shock (e.g. Categories. Fuel economy went from 12.5 to 13.5 gph to 10 gph. It may not be enough to cause problems with the way the engine runs aor even make into the cylinders, but it is enough of a mist to take out a O2 sensor.
Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment You are using an out of date browser. As far as a sensor goes, absolutely nothing. The spark must be manually tuned. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. The Sniper EFI throttle-body drops in place of your . The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Some of the landlubbers who are reading this may not realize that many inboard engines utilize what is called a wet exhaust, pushing the water from the engine block into the exhaust and then back into the lake/river/sea on which they float. The O2 sensor burned out immediately. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Car runs perfect . I have searched thru the forum as much as I can, with not much luck. Wideband Oxygen Sensor Extension Cable. Add To Cart. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . 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. 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.