The very front would be the safest place. To close this one out, below is a photo of where I installed the O2 bung. No one cares about your buddies old antiquated garden hose technology. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. EFI Systems based on Holley's world-class Dominator and HP ECU's. The Sniper EFI throttle-body drops in place of your . HP comes from torque and rpm and rpm breaks things and increases wear. A replacement clamp on would be an easy change out. Brand: Holley EFI Emission Code: 4 . i thought about it, but after $3400 on an EFI alone and an entirely new rigged boat Im having a hard time forking out another 2000 for an exhaust when I may just do an open loop My buddy machined up a set of spacers I sketched out for him. Will I be able to run both systems off of one fuel pump? As always, your results may vary and batteries not included. Greatest struggle is the shift interrupt. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Was in marine engineering for years. Items 1 - 21 of 21 Items. You are using an out of date browser. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 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.. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. 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. The clamp-on that came with mine wasnt a good fit on my 2" pipe. Doesn't look like it will have an O2 sensor. test the sensor.. for a basic pass/fail of the sensor. (probably with the edelbrock marine 2506 intake). If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. pull the sensor out of the exhaust. If I am reading your post correctly you are using two separate o2 sensors when using headers ? I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. MAP Sensors. 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. To take advantage of all the site features, please take a moment to register. I installed it without O2 sensor, adjust on the fly. 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. 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. The target A/F value based on load or MAF cfm, and engine speed. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. ), https://www.ebay.com/sch/i.html?_froensor&_sacat=0, https://www.amazon.com/Bosch-Automot1296929&sr=8-3, https://www.efisystempro.com/wbo2-seer-tbi-554-155, https://forums.holley.com/showthread2927#post82927. I had an injector fail after a month of running and called the tech line who helped me figure that out. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? 10 min read. is donald smith still alive; julie grant court tv cheerleader 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. This free oxygen is picked up by the O 2 sensor and determined to be indicative of a lean AFR condition when, in reality, the engine could potentially be running slightly rich. so simple check first, whats the fuel pressure? 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. EFI EFI kit electronic fuel injection. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. The spark must be manually tuned. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Are you holding your RPMs back with the MSD for some reason? The original Holley Sniper instructions are available on the Holley website if you have misplaced them. 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. JavaScript is disabled. 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 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. Car runs perfect . 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. 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. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. My hand is holding the connector to the sensor. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Prime cannot be adjusted on this old unit. It doesn't even mean that you can't do it. Well an update on the Sniper install. The O2 sensor burned out immediately. Maybe this one has a shorter cable? PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. For a better experience, please enable JavaScript in your browser before proceeding. 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. 74 FJ40 confined to the swamp. blue doberman puppies. Sniper EFI Releases new Stealth 4150 Models! It works fine. Q3. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. . Thanks for the compliment--we look forward to your feedback! Add To Cart. 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. Also some tips on preventing O2 sensor damage Thinking about this I think this will work very fine! Visit their website for more details. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Some parts are not legal for use in California or other states with similar regulations. 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. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. I have a boat with twin 3.7 Mercruisers. The problem occurs when an excessive amount of oxygen makes its way from the intake port directly into the exhaust at idle and low engine speeds because of overlap. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. It is possible for the ECU to have an internal failure that can kill O2 sensors. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. 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. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. I also capped off the regulated return line with a hose, clamps, and chamfering bit. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. Sadly, no. Holley EFI Oxygen Sensor. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. I have not gone back in to try to fine tune them. 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. 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. I will keep the in-line pump for a spare. Phil said water would still get up over the snail and knock out the sensor. Menu. 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. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. 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. Douglas Cline. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. 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. Bosch 17025 Oxygen Sensor #1 Best Seller . The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. This really applies to any O2 sensor regardless of EFI system. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Sniper EFI 4500 Marine. 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! 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? The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. No, use only one 02 sensor, mounted close to exhaust manifold, or high up on a Header collector, not into a single Header pipe that merely gets a exhaust pulsation. 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 was mocking it up at the time. Some logs have water up to just short of the port. 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. When I went to Holley HP, I found an adapter by Innovate that is designed to draw air out the exhaust stream and away to the O2 sensor. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. CTS (Coolant Temperature Sensor) - Reads engine temperature. You really want a bigger engine. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: Add to Cart . JavaScript is disabled. It appears that its a tuning issue. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. I would send an Email to Chris at EFIsystempro. What exhausts are the best? 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? 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. Replaced and gapped to .45 all spark plugs. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. 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. 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. 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. 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? 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. But you still risk a little water running back at low Rs. PS, Once someone has a good 270/350 tune, everyone can use it. Any word on this? So I bought the progressive linkage but you then have . Miami, FL. EFI System Pro had everything I needed for my EFI upgrade. Boats don't cruise at 60mph up and down hills. Maybe my manifolds leaked the inside between the snail and the log?? RPM going up and down , miss firing and backfiring. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. Stock manifolds? As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. $5 Off Your $100 Mobile App Purchase . Got a picture? I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. 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. so far so good love the smooth power and easy starts. 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. 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. Mike. But MAP sensors are very easy to physically implement and are inexpensive. I am a competent mechanic and I have checked all the usual suspect items. The truck started fine after install, and ran down the road ok. 29. I have a 74 bronco, 302, mild cam. I have a 74 bronco, 302, mild cam. Did you use the Holley fuel pump and have you had any issues with it? Yellow Cold! 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)? The Sniper will do that. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. If you find that please let us know. I have not yet got it figured out. I've seen O2 sensors in water jacketed headers that have worked fine for years. It flows 850 cfm and can support up to 650 horsepower. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Sniper EFI Installation Guide. 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. The World's largest Thanks. 02/25/2020. $132.95. The test run was great, they have never run so well even when they were new with carbs. 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. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . 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.) Precisely Adam. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. 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. 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. . Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Replacement Sniper and Terminator X O2 Sensor. Wiring the Holley Sniper EFI system is equally easy. Part # 554-155. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. running holley sniper without o2 sensorplymouth township mi police scanner. I recommend popping for the Master . 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, The engines are rated at 170 hp each. Everyone raving about customer service is telling the truth! My boat is still in winter storage. I thought about adding some sort of extra protection but never did. Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! 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. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Sniper EFI 4bbl Marine. I tried holley tech support, no answer and put on hold for hours. Register now for free!) You must log in or register to reply here. 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.). Capability Range: Advanced 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. I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? What I installed on the motors was the Holley HP 19lb Holley Injectors the Holley 522-198 duel sync distributors with the MSD Digital 6A and the MSD Blaster 2 coils. Ran about 5 seconds and died. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. 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. Full product line and accessories at excellent pricing. The light shines in the darkness, and the darkness has not overcome it. quick fuel. 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. Note the temperature sensor mounted on the back of the driver side head in the above photo. Have engine apart and head checked and cleaned at machine shop. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Holley EFI has the solutions you need to get your project up and running better than ever! I will be calling around to see if I can find someone to help that has experience. Sent unit back to Holley. Only a few hours on the motor but so far so good. Adam. 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. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. I did--- Save your money and piece a fuel it together. Followed all the instructions to the letter. Distributor and ignition box? Replaced O2 sensor but continued to have AFR issues running too rich. The wiring was a bit of a mess. . Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. Wideband Oxygen Sensor Extension Cable. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. I will be starting mine up this month, I hope it goes well, good luck to you. Holley part number 554-155. Why? Ordered another dominator Bosch from Holley and it matches perfect. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Is Holley working on a complete marine package or planning to in the future? 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. . While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Vega$69. Once the tune is complete, the O2 sensor can be defeated or . https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth.
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