I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. 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. . JavaScript is disabled. Thanks for the feedback on this adapter, Donald. It does not look like anything particularly superior in concept. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Have to replace head gasket. 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. (probably with the edelbrock marine 2506 intake). The O2 sensor burned out immediately. 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. A 90-degree V-6 has three shared crankpins set 120 degrees apart. Have engine apart and head checked and cleaned at machine shop. 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. Description. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. The Sniper will do that. Price Point: $$$. 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. . As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. 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. Good luck! Capability Range: Professional Hopefully this one lasts longer than the original. Is Holley working on a complete marine package or planning to in the future? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. test the sensor.. for a basic pass/fail of the sensor. Staff Writer. In this case, the prime shot is good for cold, but too much for warm. 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. You have to one big hole in the riser, then you reach the cooling water, and one little hole in the next part of metal: now you reach the exhaust gasses. 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. All times are GMT-6. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. $119.95. You are using an out of date browser. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. 5. 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. EFI EFI kit electronic fuel injection. 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. The new Exhaust manifolds will have wideband O2 bungs for tuning. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. I would back-burner the ignition control questions until you get the fuel injection working. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? O2 sensors are water proof. 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. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! You really want a bigger engine. I'm 3" down from the bottom of the flange to center of bung. 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). 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. Innovate Motorsports HBX-1 Bung Extender. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Sniper EFI Releases new Stealth 4150 Models! Do you offer a USCG fuel pump kit? These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. I am a competent mechanic and I have checked all the usual suspect items. 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. Purely coincidence about the '2300' number. Yellow Cold! ), 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. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Yes, this is an old thread, but it's an old unit. Part# 534-199. Holley Sniper EFI Self-Tuning Kit - Shiny Finish, Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI Self-Tuning Kit - Classic Gold Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish. Good luck to all. I have a boat with twin 3.7 Mercruisers. Bolt-on carburetor style EFI for your classic car or truck. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. Part# 554-155. holley efi. Q3. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Bolt-on carburetor style EFI for your classic car or truck. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Wiring the Holley Sniper EFI system is equally easy. You should then have at least 18-24" of pipe after the sensor. 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. Wideband Oxygen Sensor Extension Cable. 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). Part# 50-5009QFT. Idle and off-idle performance (particularly as the engine goes into gear.) Only show this user. Not always the case with a boat. Increasing efficiency is always a good idea. The very front would be the safest place. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. Also the progressive link. To take advantage of all the site features, please take a moment to register. To simplify . Mike. 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. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. This is the 02 sensor adapter I used. I installed a holley sniper kit. : For registered members this ad will NOT show. You have to angle it to help the throttle cable get around the booster. Will I be able to control my ignition timing with the Sniper? Part # 554-155. Note the temperature sensor mounted on the back of the driver side head in the above photo. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. Other? I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. In the case of the car, you can generally get out and walk (run?) Capability Range: Moderate 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. It flows 850 cfm and can support up to 650 horsepower. turn on the ignition.but do not start the engine. The engine RPM when closed loop o2 will begin. Prime cannot be adjusted on this old unit. Thanks again for writing! The included fuel system places a 340LPH fuel pump in the tank, which can easily be . Features: . Stay up to date with the latest releases, events, promotions and more. I just discovered that was the case with my Fitech. My hand is holding the connector to the sensor. 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. Holley sent him a new one for free. Holley EFI Oxygen Sensor. 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. 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. 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. pull the sensor out of the exhaust. Its the Holley Pro Jection TBI mentioned by the above poster. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Holley EFI has the solutions you need to get your project up and running better than ever! 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. so simple check first, whats the fuel pressure? In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. EFI EFI kit electronic fuel injection. I have a 74 bronco, 302, mild cam. The target A/F value based on load or MAF cfm, and engine speed. I installed one also on mercruiser 260 hp. Found out that it was due to rfi/emi. The clamp-on that came with mine wasnt a good fit on my 2" pipe. It does not work with the Sniper EFI oxygen sensor. 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. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. 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. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Your talking flames at that point, and it will definitely have an effect on the reading. 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. 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. Mine is right where Steamers is, and works well with my AFI TBI. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Distributor and ignition box? Are you running the latest software? Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Otherwise I have to check for a place in my gasoline tank to put the lines in. 2023 Holley Performance Products, Inc. All Rights Reserved. blue doberman puppies. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. 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. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. I have searched thru the forum as much as I can, with not much luck. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Did you use the Holley fuel pump and have you had any issues with it? 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. Boats don't cruise at 60mph up and down hills. Add to Cart . 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 hos. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? 02/25/2020. Advanced throttle body injection systems capable of transmission control and more. Apr 13, 2017. with the extension. On my system, I machined in the O2 sensor right between the snail and the manifold of a . No matter what I do, it will not start. 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. Have you visually verified that all your injectors are spraying? I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. With a bad TPS you will have to manually prime to try and get it . This Video Shows Ideal O2 Sensor Placement! Holley Sniper EFI Wideband Oxygen Sensor. 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. Next, the new unit was installed onto the manifold. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Phil said water would still get up over the snail and knock out the sensor. Seems to LEARN much faster than the Fitech did. 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. 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. As far as a sensor goes, absolutely nothing. Add to Cart . He also explains how to properly install them. Q1. 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. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? If this is a first time effort, find a tuner in your area with marine experience. 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. This really applies to any O2 sensor regardless of EFI system. I recommend popping for the Master . It should be pretty straight forward what each of these values do. 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! 74 FJ40 confined to the swamp. Some logs have water up to just short of the port. Could show a lean condition when in fact it really isn't. 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. 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. non biased Shelby Cobra related site! . A third option would be to run your EFI system without an O2 sensor at all. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. 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. 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. Sort. I purchased the Holley HP MPFI system and went to the lake with it. Sorry for the late reply, Douglas. But you have to get it tuned. I installed a holley sniper kit. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. To close this one out, below is a photo of where I installed the O2 bung. 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. RPM going up and down , miss firing and backfiring. Will I be able to run both systems off of one fuel pump? This doesn't apply to race boats. Fortunately, it turns out there are some options. *Possible delays due to Covid-19 click for more information. Specs. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. The Tech Tips and discussions are also great! 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. 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. I'm about to embark on the same type of project. Add to Cart . Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Follow USCG rules about materials and fittings. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? HP comes from torque and rpm and rpm breaks things and increases wear. What exhausts are the best? Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. 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. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers.