Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. 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. 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. - You are currently viewing the forums as a GUEST. I was mocking it up at the time. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. 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. Capability Range: Professional Capability Range: Moderate Runs like a champ now. Holley Sniper EFI Oxygen Sensors 554-155 Do you recommend in-tank or external fuel pump? Then they had it repaired and back to me in 5 business days. JavaScript is disabled. My boat is still in winter storage. 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. I tried holley tech support, no answer and put on hold for hours. 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. 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. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. The engines are rated at 170 hp each. 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. Maybe my manifolds leaked the inside between the snail and the log?? Affiliate. 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. When either of these operating temperature ranges is exceeded, the sensor can no longer be . I want to register an account for free right now! 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. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. It may not display this or other websites correctly. Supports up to 650hp with Four 100 Lb/Hr Injectors! Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. Other countries likely have simmilar approval processes for marine engines. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . 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. Sniper EFI 4500 Marine. 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. Master ASE tech since 91. Super helpful and knowledgeable. *Possible delays due to Covid-19 click for more information. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. 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. Holley EFI Oxygen Sensor. $43 per night (Latest starting price for this hotel). The new Exhaust manifolds will have wideband O2 bungs for tuning. Is this a good upgrade? This was for MPFI. Q2. Holley EFI has the solutions you need to get your project up and running better than ever! In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. Full product line and accessories at excellent pricing. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. May God's grace bless you in the Lord Jesus Christ. Add To Cart. Yes, this is going to be an added expense, however, it will help guarantee your success. 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? Innovate Motorsports HBX-1 Bung Extender. Note the temperature sensor mounted on the back of the driver side head in the above photo. Sorry for the late reply, Douglas. Capability Range: Advanced 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. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. 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. Q3. so simple check first, whats the fuel pressure? Add to Cart . They are about 4 inches long, in-line between the log and manifold. Wideband Oxygen Sensor Extension Cable. 4. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. You will still get some water on the engine side of the snails, mainly at low Rs. Free ground shipping regardless of order size! 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. Thanks for the feedback on this adapter, Donald. 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. I also capped off the regulated return line with a hose, clamps, and chamfering bit. With the sniper as long as you locate the o2 sensor where it gets good feedback and stays dry long enough to get a good tune you could lock it so even if the o2s get wet it still runs good. The Tech Tips and discussions are also great! I have tried several different settings to get it going, no luck. 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. YES! Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Items 1 - 21 of 21 Items. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. Price Point: $$$. 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. Mine is right where Steamers is, and works well with my AFI TBI. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. For gourmands, night markets not only offer scrumptious small . It will flood itself out and won't start back, just crank and crank. Add To Cart. 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. Boats don't cruise at 60mph up and down hills. check out the. Has anyone run an O2 sensor in an EFI on a marine engine? The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. 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. Not sure how well the sensor likes being that close to the port. The spark must be manually tuned. Conditions when closed loop o2 should be turned off. It works fine. Phil is right. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! I installed a holley sniper kit. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? 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. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Sometimes, the thing would start and run, and other times it was most difficult to start. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. It may not display this or other websites correctly. Plug into the coolant temperature sensor. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. I have not gone back in to try to fine tune them. . 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. This is the 02 sensor adapter I used. JavaScript is disabled. Copyright 2022 Holley Performance Products, Inc. All right reserved. Powering the Sniper, There are three wires that need to be connected to power on the Sniper, Red and Black main power wires, these need to be run directly to the battery and have a solid connection. Got a picture? Is Holley working on a complete marine package or planning to in the future? Waiting for spring to put back together. Phil said water would still get up over the snail and knock out the sensor. It should be pretty straight forward what each of these values do. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. 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. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. The target A/F value based on load or MAF cfm, and engine speed. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Was in marine engineering for years. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. I think I could run more boost but it's a real hand full right now. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Yellow Init In First shown for an instant when the system is powered on. Do you offer a USCG fuel pump kit? Let me know how I can be of assistance. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. I have not yet got it figured out. A replacement clamp on would be an easy change out. . It will not fit on round or oval risers without a suitable flat area. 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. Part # HM206. . Everyone raving about customer service is telling the truth! It's a compact HP pump and cooler assembly. Jan 20, 2019. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. I installed it without O2 sensor, adjust on the fly. . Also some tips on preventing O2 sensor damage Holley EFI Oxygen Sensor. Capability Range: Advanced : For registered members this ad will NOT show. May 1, 2018 They want you to angle it to keep it from fouling. If this could be disabled it would be much better. 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. He knows his stuff, gets back quickly to you, etc. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. As far as a sensor goes, absolutely nothing. For a better experience, please enable JavaScript in your browser before proceeding. Any word on this? I have a boat with twin 3.7 Mercruisers. Aug 17, 2013. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. Everyone else was backordered several months. Are you running the entire system? It could be an instant fix. You should then have at least 18-24" of pipe after the sensor. The Sniper will do that. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. 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. From there, the idea is that it will self-tune to the requirements of the engine. 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. Anything else is going to be a frustrating recipe for for failure. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Could show a lean condition when in fact it really isn't. Running? I installed one also on mercruiser 260 hp. 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. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Bolt-on carburetor style EFI for your classic car or truck. 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. 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 am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. The clamp-on that came with mine wasnt a good fit on my 2" pipe. I think installing a wide band O2 sensor in the manifold(s) is a great idea. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). Just a rumor. The test run was great, they have never run so well even when they were new with carbs. well I have installed the Sniper on my 460 KEM (Ford) marine motor. 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. Have you visually verified that all your injectors are spraying? Sniper EFI 2300 Marine. $132.95. Bolt-on carburetor style EFI for your classic car or truck. Can anyone share their experiences with this type of setup? However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. $119.95. Thanks again for writing! I just discovered that was the case with my Fitech. 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! Spray a rag down pretty good with brake cleaner. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Some parts are not legal for use in California or other states with similar regulations. I have a 74 bronco, 302, mild cam. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. Late to the party but here's where mine are installed. EFI EFI kit electronic fuel injection. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Are you holding your RPMs back with the MSD for some reason? MAP Sensors. 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. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Can more detail be provided? I found this in the instruction manual for the older commander 950 system. So I bought the progressive linkage but you then have . Thanks. Categories. 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 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. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. 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. Thanks for that, Danny. 10 min read. YES! Holley EFI. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . #1. 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. Next, the new unit was installed onto the manifold. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. 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. In order to do this, it heavily relies on proper O2 sensor placement. 534-199. 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. Holley Sniper O2 sensor replacement. Purely coincidence about the '2300' number. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. 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. I've seen O2 sensors in water jacketed headers that have worked fine for years. When it did keep running, the headers all started to smoke. Emissions. QFI-500 Oxygen Sensor. Sent unit back to Holley. Add to Cart . 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. . But it is going to be a little tricky. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. The plan is to 'learn' a fuel\Timing curve with a closed loop. 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. 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 adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Are you running the latest software? You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. Follow USCG rules about materials and fittings. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! But this also makes me wonder what you did for the O2 sensor. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. 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. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Good luck to all. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Menu. The engine RPM when closed loop o2 will begin. Register now for free!) Capability Range: Professional Only a few hours on the motor but so far so good. I did--- Save your money and piece a fuel it together. 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. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. For the most part, the small harness is plug-and-play. I'm about to embark on the same type of project. Part# 50-5009QFT. so far so good love the smooth power and easy starts. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! 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. Staff Writer. This doesn't apply to race boats. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Sniper EFI Releases new Stealth 4150 Models! the engine not running. The World's largest Capability Range: Advanced The truck started fine after install, and ran down the road ok. 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. Maybe going all the way to the front is the way to go? 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. 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 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. But you have to get it tuned. The O2 sensor burned out immediately. Stay up to date with the latest releases, events, promotions and more. EFI System Pro had everything I needed for my EFI upgrade. 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. 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. I know from some of the other posts, there have been WBO2 sensor issues. 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. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. 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. Well an update on the Sniper install. 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. All of the wiring begins at the throttle body and connects outward from there. Vega$69. CUSTOM ART FOR CUSTOM NEEDS. Here's the pic of the location with my header. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Replacement Sniper and Terminator X O2 Sensor. 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. Then turn the engine off and "lock in" the tune in a non-feedback loop mode, and quickly remove the headers and wash them off to prevent damage and then swap to the manifolds, but that would honestly be a huge PITA. I've dunked mine lots of times. I put mine after the collector only because I have a new exhaust and muffler going in and Ill use a weld in bung and placement will be different. Ran about 5 seconds and died. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Seems to LEARN much faster than the Fitech did. If you let it cool down again, does it start up fine? Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. The very front would be the safest place. 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. We use cookies to enhance your experience while using our website. 2014 FJ Cruiser - White - 4X4 - Loaded - . Without Headers Steamers location (above) is perfect, up close to the engine where you . 3. Homemade body parts replace the originals as they rot away but it's a 40 on the inside.