You really want a bigger engine. 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. 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. So far so good. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 5. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. And who can blame them? 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. 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. :-), I started using OMC and Volvo Penta pumps for my conversion. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. In the case of the car, you can generally get out and walk (run?) looking at doing the same. This doesn't mean it can't be done. Sniper EFI 2300 Marine. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. I just discovered that was the case with my Fitech. 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. Then if that doesn't work call the tech line they are great! Capability Range: Moderate I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? I have also picked up another .5 gallons per hr to about 9.25 gph. It will flood itself out and won't start back, just crank and crank. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. Plug into the coolant temperature sensor. They are the only ones got me a holley usb to can cable fast. (If I am incorrect I heartily invite your comment at the bottom of this article!) I want to register an account for free right now! . It may not display this or other websites correctly. We also use content and scripts from third parties that may use tracking technologies. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Dec 28, 2016. Add to Cart . One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . O2 sensors are water proof. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Replaced O2 sensor but continued to have AFR issues running too rich. 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! p.s. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. . I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. What motor is this on? O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. All sensors are tested to ensure they accurately report critical engine data to the . 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. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. For a better experience, please enable JavaScript in your browser before proceeding. Doesn't look like it will have an O2 sensor. It may not display this or other websites correctly. Sniper EFI Quadrajet Marine. It does not work with the Sniper EFI oxygen sensor. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. From there, our highly trained factory refurbish technicians flow the original fuel injectors. 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. 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. 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. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. This page was generated at 08:35 AM. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. I will keep the in-line pump for a spare. Prime cannot be adjusted on this old unit. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. Everyone raving about customer service is telling the truth! Great Article. But this also makes me wonder what you did for the O2 sensor. May 19, 2021. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Part# 550-511. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. RPM going up and down , miss firing and backfiring. The target A/F value based on load or MAF cfm, and engine speed. Full product line and accessories at excellent pricing. Bolt-on carburetor style EFI for your classic car or truck. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. When problem-solving this type of issue, consider when and how you could use a work-around. 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. Specs. 02/25/2020. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Also some tips on preventing O2 sensor damage I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. I think installing a wide band O2 sensor in the manifold(s) is a great idea. 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. Hopefully this one lasts longer than the original. Car runs perfect . Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Other? Add To Cart. you don't want to read that loss. . By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. 2014 FJ Cruiser - White - 4X4 - Loaded - . turn on the ignition.but do not start the engine. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Who knows. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. 534-199. It could be an instant fix. Followed all the instructions to the letter. EFI EFI kit electronic fuel injection. Does an yone have a pic of the O2 sensor in their exhaust? Staff Writer. Douglas Cline. I'm guessing by snail, that's another name for the riser? 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. Note the temperature sensor mounted on the back of the driver side head in the above photo. Thinking about this I think this will work very fine! On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Capability Range: Professional 3. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Well an update on the Sniper install. 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. 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. The in tank pump is quieter, will normally run cooler and should last longer. It's fast, simple and absolutely free. Holley's self learning system is a blessing and a curse. Features: . There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Sent unit back to Holley. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Jan 20, 2019. Add to Cart . Just a rumor. He is a wizard, might be able to give you some pointers, will ask you what version of the software you are on, whether you're running the progressive adjustable linkage, etc. The throttle body has a built in fuel pressure regulator set at 58.5 psi. Have you visually verified that all your injectors are spraying? Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. 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.. The new Exhaust manifolds will have wideband O2 bungs for tuning. Sensors that are installed in an exhaust must be connected to a properly http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Yellow Cold! Bolt-on carburetor style EFI for your classic car or truck. Use a return fuel line. 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. Holley part number 554-155. The engine RPM when closed loop o2 will begin. non biased Shelby Cobra related site! (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. You can selectively provide your consent below to allow such third party embeds. 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). Specs. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! There was a 1.5 point difference in afr between banks. 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. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Fine tuned the timing to 12-15 degrees. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. For gourmands, night markets not only offer scrumptious small . Can anyone share their experiences with this type of setup? Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. I have not yet got it figured out. Why? Find a lower price anywhere and we'll beat it by 5%! With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. Sorry for the late reply, Douglas. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. That is defacto step one in trouble shooting fuel injection systems. Greatest struggle is the shift interrupt. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. I have searched thru the forum as much as I can, with not much luck. 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. Holley EFI Oxygen Sensor. Followed all the instructions to the letter. Other countries likely have simmilar approval processes for marine engines. Holley EFI has the solutions you need to get your project up and running better than ever! 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. I am a competent mechanic and I have checked all the usual suspect items. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. Then they had it repaired and back to me in 5 business days. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Emissions. 3. 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. the engine not running. The light shines in the darkness, and the darkness has not overcome it. 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. Everyone else was backordered several months. He had one there that was run on a dyno then the fuel map was set and shipped back. . . Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. Maybe this one has a shorter cable? This Video Shows Ideal O2 Sensor Placement! Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. The truck started fine after install, and ran down the road ok. 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. I'm using the NTK sensor. The Fora platform includes forum software by XenForo. Categories. The O2 sensor burned out immediately. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. 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. That's great--we look forward to your results! Here is one on start up tuning. Price Point: $$$. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. I found this in the instruction manual for the older commander 950 system. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Capability Range: Professional I have searched thru the forum as much as I can, with not much luck. Adam. Part # 554-155. HP comes from torque and rpm and rpm breaks things and increases wear. Sniper EFI 2300 Marine. So much it could be. Free ground shipping regardless of order size! 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. pull the sensor out of the exhaust. 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. Conditions when closed loop o2 should be turned off. I'm about to embark on the same type of project. 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. Description. I've dunked mine lots of times. Runs like a champ now. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. Holley Sniper EFI Wideband Oxygen Sensor. It works fine. 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. 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). ), 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. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Holley EFI Usb/Can Harness, Sniper Tbi. If you are not running the latest software stop guessing and go download it. I have a 74 bronco, 302, mild cam. When buying the Holley Sniper EFI kit, you've got two basic options. The O2 sensor burned out immediately. It will crank and run great for 2-15 seconds then die. Bolt-on carburetor style EFI for your classic car or truck. CUSTOM ART FOR CUSTOM NEEDS. Distributor and ignition box? The ones in the Bosch box come without warranty. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Price Point: $$$. Brand: Holley EFI Emission Code: 5: Material: . While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Visit their website for more details. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. If this is a first time effort, find a tuner in your area with marine experience. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. 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. Initial Calibration in Basic Configuration. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. 74 FJ40 confined to the swamp. 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. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. 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? With a bad TPS you will have to manually prime to try and get it . I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. 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. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Found out that it was due to rfi/emi. EFI Systems based on Holley's world-class Dominator and HP ECU's. I tried holley tech support, no answer and put on hold for hours. 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. Bolt-on carburetor style EFI for your classic car or truck. 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. 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.). And it is timing that is equally critical to best performance and fuel economy. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Mike. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. The Sniper EFI throttle-body drops in place of your . From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. If this could be disabled it would be much better. Sort. 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, check out the. 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. My bet based on longer pump run, to make pressure, you have a leaking injector. Sensors that are installed in an exhaust must be connected to a properly functioning controller during engine operation 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 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. I have not gone back in to try to fine tune them. I will let you know what happens. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Copyright 2022 Holley Performance Products, Inc. All right reserved. Find a lower price anywhere and we'll beat it by 5%! Thanks for the heads up. Q3. Increasing efficiency is always a good idea. 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. Any word on this? 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.



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