I will be starting mine up this month, I hope it goes well, good luck to you. Fuel economy went from 12.5 to 13.5 gph to 10 gph. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. 5. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. The Sniper EFI throttle-body drops in place of your . Thanks. Part # HM206. Purely coincidence about the '2300' number. 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. It turns out that the loading generated a propeller in the water is significantly different than wheels on pavement, so much so that the map has to be tuned differently. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Have to replace head gasket. Holley EFI Usb/Can Harness, Sniper Tbi. . Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Good luck! About your only location is in that short area from the log to the port face. They have mods that help. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. You will still get some water on the engine side of the snails, mainly at low Rs. I recently installed the sniper setup on my stock 71 duster 340 4 speed. I know from some of the other posts, there have been WBO2 sensor issues. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Then having an experienced tech from a local dyno speed shop ride in the boat as you run the power up and down, making notes. excessively rich mixtures), Mechanical shock (e.g. Oops, after that it cranked right up.Idle was set to 950rpm so after the vid was cut off I lowered it to 820rpm and it was purring like a kitten.EFI for dummies. Add to Cart . If he wants to run in closed loop and have the system adapting to conditions at all times, the minute he fouls he is dead in the water. You can selectively provide your consent below to allow such third party embeds. Aug 17, 2013. so simple check first, whats the fuel pressure? Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! 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. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. Found out that it was due to rfi/emi. It does not look like anything particularly superior in concept. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Anything else is going to be a frustrating recipe for for failure. Advanced throttle body injection systems capable of transmission control and more. 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. Capability Range: Moderate On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Holley Sniper EFI Wideband Oxygen Sensor. Throttle body mounted ECU - no extra boxes to mount. You should then have at least 18-24" of pipe after the sensor. 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. Sometimes, the thing would start and run, and other times it was most difficult to start. Still needs a EFI pump and return line. 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. Sent unit back to Holley. Add to Cart . When problem-solving this type of issue, consider when and how you could use a work-around. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. It will flood itself out and won't start back, just crank and crank. I think I could run more boost but it's a real hand full right now. 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. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. 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. A forum community dedicated to performance boat owners and enthusiasts. . But it is going to be a little tricky. Part # 554-155. 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. I will get a new 02 sensor before I swap back to the orange box. 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. 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. Thanks again for writing! And who can blame them? I installed a holley sniper kit. you don't want to read that loss. I had an injector fail after a month of running and called the tech line who helped me figure that out. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. If you are not running the latest software stop guessing and go download it. I am just now ready to do the tuning this weekend. Installed the sniper/MSD combo on my mildly built 460 KEM. There was a 1.5 point difference in afr between banks. Can anyone share their experiences with this type of setup? 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 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. Find a lower price anywhere and we'll beat it by 5%! I installed one also on mercruiser 260 hp. Boats don't cruise at 60mph up and down hills. The ones in the Bosch box come without warranty. Who knows. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Brand: Holley EFI Emission Code: 4 . Good luck to all. Capability Range: Moderate I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. 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. 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. You must log in or register to reply here. non biased Shelby Cobra related site! In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Add to Cart . I want to register an account for free right now! My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. The sniper fit perfectly on the intake. It works fine. Aftermarket headers are pretty much the only safe way to run an O2 sensor. If this could be disabled it would be much better. Some logs have water up to just short of the port. 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. 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. YES! I installed the adapter and elbow so it's at an angle above the entry point. I have not gone back in to try to fine tune them. I've installed several of these adaptive EFI's on cars with great success. 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. So much it could be. My bet based on longer pump run, to make pressure, you have a leaking injector. 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.. 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. You'll also notice that the firing order is 1-6-5-4-3-2. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Jan 20, 2019. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. : For registered members this ad will NOT show. 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)? But you still risk a little water running back at low Rs.
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