$34. By following the green wire, you will be able to find the wiring. Carefully, unhinge the electrical wire that’s embedded within the sensor. The Mustang 5. O2 Sensor Harness (96-98) 4. Michigan Motorsports takes out the guesswork with this 2018-2020 Mustang GT O2 extension kit! The factory harness cannot reach the new O2 sensor location, therefore these plug and play extension harnesses are needed. Pick one up today to get rid of that MIL, malfunction indicator light, and get your 4. Part Number: SET-REPF960904-2. SO it just got entered into my brain as being an 86 Mustang O2 sensor. 120 to 0. Fuses F2. Please read notes!And being that you dont have them, the light should essentially always be on. Quantity: Sold as a pair. I installed new MIL eliminators yesterday and after 37 mile the darn cel came back on. 45 volts is interpreted by the ECM as a rich exhaust, and an O2 sensor voltage signal below 0. Gently press on the tab of the sensor, then pull it out of the housing it is in. Oxygen Sensor. Upstream and Downstream are compatible with the 1999-2010 Ford Mustang GT, Ford Mustang V6; 2007-2010 Ford Mustang GT500. Aug 14, 2009. Hand-picked by experts! Pay later or over time with Affirm. 1594 posts · Joined 2007. #10 · May 21, 2011. "Bank" refers to passenger and driver's side sensors. ) The main power ground is from engine block to battery: it is. 33,544 POSTS. 8L v6Be the first to answer. The hole needs to be plugged on the 2002 models maybe even some other years between 99-04. This range does not include taxes and fees, and does not factor in your unique location. Close. 73 @ 128. bank 1 sensor 2 read 0. 0 Ford Mustangs. Units come ready to "plug and play", with no need for modifications. #1. Ford Racing 5. I think you are correct, I replaced the passenger upstream and still threw out same code. A worn-out oxygen sensor can cause engine performance problems and shorten the life of. There are pre and post cat sensors and the post just measure to see if the cats are working. 28. Get your replacements today at Late Model Restoration. Sep 11, 2023. 8 powers the O2 heaters. Powerheads built 2v, Saleen Series IV Lysholm 1. 3" pushrods, BBK shorties, Crane PS-91 coil, Walbro 155lph fuel pump, FRPP 24# injectors, Kirban AFPR, FRPP 65mm TB, Edelbrock Performer intake,. The extensions use a female and male version of the original plug. The right side rear O2 sensor will have a white/black and red/light green wire. The second digit is its Location ID: 1 = close to the exhaust manifold, 2 = behind the CAT. The only solution is to wire up Ford Mustang GT O2 simulator to the o2 sensor’s harness to emulate the exhaust air fuel sensor. But with the o2 sensor is it as simple as swapping it out for a new one to fix the richness level or is this something that my mods or tune is causing? The other o2 sensor is functioning fine and my rear sensors are turned off (just to answer any loose questions) 2004 Mustang GT 40th Anniversary Bassani o/r x-pipe, Flowmaster 40. MOTORCRAFT ® OXYGEN SENSOR. I bought a kit made for the 2015-2017 5. If you really need to, you can unlock the pins in the connector and use your old one. Motorcraft ® oxygen sensors are designed for maximum performance. In some cases the threads will need to be repaired. mustangguy98 said: I was thinking O2 sensors after resetting the computer and getting a new tune, to changing spark plugs, cleaning fuel injectors, checking lockouts on manifold and installing brand new ford performance coil packs. Cheap is as cheap does in these cases. If there is too much oxygen in the exhaust, the fuel mixture is too lean, but too little oxygen indicates that the. I have done a scan on it and everything look ok,but the cam sensor reads good and when you unplug the connector it still reads good does t I have a 2004 Mustang with a 3. I've been informed that my 2002 Mustang GT has faulty O2 sensors (most likely) which explains low-speed stuttering during acceleration. Find 2007 FORD MUSTANG GT Oxygen Sensors and get Free Shipping on Orders Over $109 at Summit Racing! Use your Summit Racing SpeedCard today, and get 15% back - Get Details!. 500 Volts. Hand-picked by experts! Pay later or over time with Affirm. This Ford Mustang GT O2 Sensor Simulator does not work on 5 or 6-wire wideband systems. It comes with 3 different sized holes that you can restrict the o2 sensor. He said it looked like bad o2 sensors but he didnt know which one or anything else. Around 98% of the time, you can assume correctly (without any. 99 (2). Sometimes you have to watch, the ecu has a keep alive memory function. The front sensors will operate the same. So Bank 1 Sensor 1 is the O2 sensor closest to the passenger side head (right around where the passenger side exhaust manifold. you cannot put MIL eliminators on the front o2 sensors. If the mixture drifts too far out of balance, a rich or lean code is stored and ECM/PCM’s fuel trim. 26. Shortly after it threw code p2195 (Bank 1 Sensor 1 Stuck/lean) and started idling pretty rough at stops. #5. 1 Year Limited Warranty. . 2014 Mustang GT 6R80 Black, Built Motor and Trans, 805whp, 606wtq, Procharger D1SC Stage 2. Joined. Save. These are sensor heater related codes, and do not affect performance of the. Using the front jack point of the vehicle, jack up the car. Testing the oxygen sensor (commonly referred to as O2 sensors) on your Ford 4. Replacing 4 O4 sensors with no improvement is a big "parts changer" hit to the wallet. 000 at all rpm's with short term fuel trim read 99. Tks for the input! Fuel level is only for the evap. 2-0. You could also try the ACT sensor. 1992 mustang gt twinturbo'd 1988 mustang gt bottlefed 2004 mach 1 collecting dust 1989. 1998 Mustang gt o2 sensor codes question. Direct fit oxygen sensor. $109. How much does Oxygen Sensor Replacement cost? Get an estimate instantly. Apr 7, 2021. 0L is a great motor, but if your oxygen sensor goes out, you'll suffer a severe decline in engine p. This video walks you through the removal and installation of an oxygen sensor on a 1994 thru 2004 Ford Mustang. If not, check the wring to the rear O2 sensors. It means that the “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. Now I just need to get my A/F gauge hooked up. If you install them in the wrong location, you're going to throw codes. 2. #1 · May 28, 2009. #3 · Nov 29, 2009. These sensors work perfect and seem to be better built or more durable than OEM mustang upstream O2 sensors. O2 eliminators only work on older vehicles. For example, if the engine light is on due to an oxygen sensor fault, the catalyst monitor will not run since it requires signals from the oxygen sensor. 02 GT throwing several codes,. They have paladium which reacts with the exhaust. If the powertrain control module (PCM) detects a level of voltage from an oxygen (O2) sensor that does not correspond to acceptable parameters, the P2254 code is stored. Some tuners will sometimes turn them off in a CAI tune. 6L) Top Contributors this Month View All G. A popular modification is to decat the. DENSO Oxygen Sensor: Downstream, 4 Wire, 15. Remember: the O2 sensors are detecting oxygen, not fuel, so even if a spark plug is misfiring and there is fuel in the exhaust along with unburned O2, the O2 will drive the sensor to signal a lean mix. went to autozone and got these codes pulled from my comp. That is what is known as the pitch. 45 . 2004 Mustang Parts; 2003 Mustang Parts; 2002 Mustang Parts; 2001 Mustang Parts; 2000 Mustang Parts. . alwayshi. Without cats installed it will see an even switch rate between the front and rear sensors and assume that it has a bad cat. 9. Step 7. AVS ForumBad idle, surging while accelerating, crappy sounding exhaust. Mustang oxygen. 6 to 19%. Compatible with all 1986-present Mustangs. M-F 8:30A-11P, Sat-Sun 8:30A-9P. I learned this trick many years ago and it REALLY helps out when it comes to seized bolts / nuts. 4L 4. If it finds an issue in the heater circuit for the engine bank 1’s downstream oxygen sensor, it sets code P0141. Options: Right Front, Left, Right Upper, Left Front, Left Upper, Front, Front Upper. 3Turbo #1978. Find FORD MUSTANG Oxygen Sensors Upstream Oxygen Sensor Location and get Free Shipping on Orders Over $109 at Summit Racing!. 0. We currently carry 22 Oxygen Sensor products to choose from for your 2006 Ford Mustang, and our inventory prices range from as little as $53. FREE 2 or 3-Day Delivery on Orders $119+ Details. 0. Motorcraft Oxygen Sensors are designed and tested to Ford's rigorous engineering standards. kimc56. Now you need to grab your two new oxygen. If you want to check for yourself, measure the distance from the top of one thread on your sensor, to the top of another. Fuse F2. O2 Sensors; X-Pipes Resonator Delete; Catback Exhaust. $104. $619. Symptoms of a bad O2 sensor: Sudden decrease in fuel mileage. The rear sensor tells if there's to much gas in the tailpipe that's not burned. P0155-. Buy Mil Eliminators here: 4: Disconnect the O2 Sensor. Put jack stands under the frame towards the front of the vehicle. Hooked my scan tool up to my 2001 gt today to live data to check the o2 sensors. '06 Tungsten GT 18" CT-R Gunmetals. While oxygen sensors are designed to last upwards of 100,000 miles, oxygen sensors will eventually go out over time and will require replacement. Pick one up today to get rid of your check engine light, and get your Coyote engine running smoothly again. What's the year and model. #3 · Jan 14, 2011. Air Management and Emissions are maintained by an Oxygen Sensor or even a series of Sensors. (S197 - 5th Gen - 5. (automatic :weeps) Engine: MAC CAI, BBK shorty headers, off-road X-pipes, and Borla Stinger Cat. I understand the stock sensors are. 99. Introduced in 2011 with 412 horsepower, the “new” 5. my check engine light has been on for about a month now and i have been neglecting to get it checked out. 0L Mustang is the oxygen sensor. Close. 2017 Mustang GT Premium - Grabber Blue, Manual, Performance Pack, 401A, Premier Trim - Sold 2021 Mustang Mach 1 Premium Chassis #5059 - Fighter Jet Gray, TREMEC, 700A, Elite Package, Appearance Package, Handling Package, Navigation, Kook's Green Catted Headers, GT500 Borla ATAK Catback, Wengerd Performance. Exterior Browse Categories in Exterior. (S197 - 5th Gen - 5. If you install them in the wrong location, you're going to throw codes. Check Details. Most of the DTC's went away, but I still get PO135 and PO155. Symptoms Of A Bad Oxygen Sensor. *Free Shipping on Orders Over $119*. A scan told me it was a P0153, Oxygen sensor circuit slow response, Bank 1 Sensor 1. '88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. 0. I got my 2004 GT about a month ago and it has roughly 190,000 miles on it. I suspect the O2 sensors are fouled from the oil that got into the exhaust. And being that you dont have them, the light should essentially always be on. ) People with mercedes and Jags adapt ford O2s because they're way cheaper. Engine Tuning Information Get the most out of your engine with a performance PCM tune. 3. 2007 - 2007 Ford Mustang. 6859 posts · Joined 2010. *Free Shipping on Orders Over $119* FREE 2 or 3-Day Delivery on Orders $119+ Details. 1 is located. P2197 O2 Sensor Signal. 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 3. #2 · Feb 11, 2010. Using all one gauge wire makes. 2001 Dark Highland Green Bullitt. Once you have found the O2 sensors, you will need to follow the green wire that is right on top of each of them. We only sell parts from trusted brands like. I've followed the drive cycles several times and several miles and obd 2 scanner still shows as incomplete. Teh TC6! Jun 14, 2006. The Oxygen Sensor sends vital data to the engine management systems in your Ford. 1 Year Limited Warranty. Bladerunner said: Only use Ford Motorcraft 02 sensors on your mustang. 6L Mustang) $124. Shop 1999-2004 Ford Mustang O2 Sensors. You post did not mention if you are looking for the wire colors from the sensor or the CAR harness. 2007 Mustang GT Convertible Stage 0 E-Force #402 Supercharger, Brenspeed Tune (435/400), GT500 Fuel pump, Clutch Delete Option, Roush Front Fascia, Brembos, California Dream Hood, Qwitch latch flush mount hood pins, MRT Light Bar, J&M LCA's, BMR UCA, UPR catch can, 6000k, Pypes. Sponsored. CEL eliminator/rear o2 sensors. Shop Mustang O2 Sensors. Driver's side front 02 sensor, bank 1/2 is the rear same side. 2017 Mustang GT Premium - Grabber Blue, Manual, Performance Pack, 401A, Premier Trim - Sold 2021 Mustang Mach 1 Premium Chassis #5059 - Fighter Jet Gray, TREMEC, 700A, Elite Package, Appearance Package, Handling Package, Navigation, Kook's Green Catted Headers, GT500 Borla ATAK Catback, Wengerd Performance. Check Details. Fox 75mm TB, FTI Ported Edelbrock Perf RPM, 58cc AFR 165s, FTI Cam, 4. 20 posts · Joined 2015. Another O2 sensor issue!!! need help! Hey everyone! I know this has been beaten to death as I have found a ton of threads on O2 sensor topic. 5 PSI (tuned down) Comp Cams XE270-AH. G. Here's the wiring diagram for the O2 sensors. New Edge Mustang GT 1999-2004, 1999-2002 NA Cobra or 2003-2004 Mach1 owners– Get your car truly ‘RACE-READY’ with MS3Pro Plug & Play! This ECU installs in less than an hour, arrives out-of-the-box ready for up to 44lbs boost and is CAN enabled for seamless control of other MegaSquirt or third party devices. However, then they will be off when/if you need an emissions test and will fail that test unless you get an emissions tune for testing. 0L) 1996 - 2004 Mustang GT (SN95 - 4th Gen - 4. From underneath, you can replace both O2 sensors without too much hassle at all. This prevents you from having to make any splices or cuts in your factory wiring. Other than the light. 28 Add TO CART Application: Downstream sensor (located after catalytic converter) Notes: Actual OE Part, Narrowband. The wiring harness that all four of the O2. Fuses F2. Bank 1 sensor 1 volts went from 0. 4L car (pick up, SUV) is not that hard to do. # 485464152. Check out the pics in this thread: How to - o2 Non-fouler/Cheater - NewCelica. Car runs great and tuned great. Disconnect O2 Sensor. This is especially useful if you are trying to manually override the air and fuel. In order to do so, rotate the oxygen sensor counterclockwise. 3. April 19, 2021 by Jason. What the P2197 code means. 6L Mustang GT are important for monitoring and controlling. 0L gave the Mustang a 112-horsepower upgrade over the 300 horsepower 4. #1 · May 28, 2009. Hooker Blackheart. P2197 is a general DTC code that indicates that the signal coming from your Ford Mustang’s first O2 sensor on the bank two side of the engine is stuck giving off a lean signal. Very gently with my gun turned way down and back and forth I finally got the last nut off. stangPlus2Birds · #5 · Apr 22, 2005. So a few resistors in the harness would make them turn the engine light back off. Expert. s34nUSA said: The answer to your question is a resounding " it depends ". The right front is red/white and grey/light blue. GY/RD wire goes to the PCM (Sig Rtn). Fog Lamps. I figure either header leak at the heads, o2 sensors, or maybe something else. Bank 1 refers to the side of the engine where the cylinder 1 is located. The diagnostic monitors the pre-catalyst heated oxygen sensor (HO2S) signal frequency and amplitude characteristics by calculating an accumulated voltage over a predetermined sample period. 6L vu (Fits: 2005 Ford Mustang) The #1 Seller of NGK Oxygen Sensors on eBay. Route the wiring for the Air/Fuel gauge through the grommet, into the firewall, as shown. 6L Tech. 113 Answers. MSRP $151. Long, Factory Connectors, Front Sensors Only, For Use With Long Tube Headers, Ford, Mustang, 3. 49. All of the O2 sensor plugs should have a red/yellow wire and a grey/red wire. Ford Mustang – (Jacob_Dawley / Shutterstock) The most common signs of bad O2 sensor in Ford Mustang are slow acceleration, loss of power, irregular idling, engine hesitation or jerking when accelerating, high fuel consumption, higher tailpipe emissions, foul odor from exhaust, check engine light illuminates, and sometimes stalling. FREE 2 or 3-Day Delivery on Orders $119+ Details. It then relays this information to the ECU to adjust the fuel mixture accordingly. #14. 6 that is stock, and I was getting a few codes related to O2 sensors. ddrallstar69 Member. Other Names: Ft Oxygen Sensor, Upper Oxygen Sensor, Sensor Hego, dy1178. The sensor has a 2-wire connector on top of it, rather large for a temp sensor. On all OBD-II Ford engines, Bank 1 is where cylinder No. The O2 signal wiring can be 18 gauge. 1 is located. Also, these were the results from the code reader: Results from 1st scan: KOEO 111 = "System PASS" Continous Memory 176 = "HEGO (HO2S) sensor fault/always lean" KOER 314 = "(Cars ONLY): Thermactor air system/fault during engine run self-test / left side" 311 = "Thermactor air system/fault during engine run self-test" Results from 2nd. Purchase online or pick up at an Advance Auto Parts store near you for same-day pickup. EZ CEL Fix oxygen sensor eliminator dispenses the Engine Management with mimicked, fluctuating voltage signal and spoofs the ECU into thinking the emissions are within allowance. Add to Cart. P0141 - HO2S Sensor Circuit Malfunction (HO2S-12) See DTC P0135 P0161 - HO2S Sensor Circuit Malfunction (HO2S-22) See DTC P0135 *note, both rear O2 sensors are called out. 6L Mustang Forums (1996-2004) 4. 5777 posts · Joined 2005. 0 out of 5 stars. Best Sellers; Clearance; New Products; Open Box;. O2 sensor failing. Check Details. My 04 mustang GT has a check engine light from the 02 sensor. Fits all 2013-2014 5. The P0053 code indicates a potential problem with the bank 1 sensor 1 oxygen sensor’s heater circuit. I have an issue with all the sensors on the same circuit: all four O2 sensor heaters, EGR and PCV, see picture for codes. Add to Cart. 0L built after 04/08/2011. On V engines, there will be two, three or four sensors: 1-1, 2-1, 1-2 and on some with dual exhaust, 2-2. Disconnect the electrical connection to the oxygen sensor. They are ground through the body of the sensor to the h-pipe. Bank 2 sensor 1 had a volt range of 0. 8 powers the O2 heaters. #LRS-9698XSHM. Application. 👉 👈 Full video!! 📽 The downstream oxygen sensors on a 2005 - '10 4. Well on a 2015 Mustang 5. Right. For example IF an "application" uses a wide band O2 sensor in the front O2 sensor and a narrow band O2 in after cats THEN swapping the O2 sensors would most certainly cause a problem. 6L Tech O2 sensor question - 02 GT. SLP M31007 1999-2004 Mustang GT / Mach 1 LoudMouth Exhaust System. 2006 GT- Airaid Race CAI,. Fitment:. Oxygen Sensor Extension Harness, 24 in. When it detects a bad 02 it will program it out even if you reset it will go back to the keep alive mode. Leave your vehicle in the position for about 5 minutes and then reinsert the fuse. 2003 Mustang GT Intake & Exhaust: K&N FIPK CAI, Mac O/R H-Pipe, Custom Catback w/ Magnaflow Magnapack Mufflers. More Info. The oxygen sensor monitors the level of unburned oxygen in exhaust fumes to determine the air-to-fuel ratio. MACH 1 MUSTANG, SHELBY GT 500, COBRA R, BULLITT MUSTANG, SN95, S197, V6 MUSTANG, FOX BODY MUSTANG,MACH-E, AND 5. Order your parts online or pick them up in-store at your local Advance Auto Parts. 1991 Ford Mustang GT. 6,766 satisfied customers. 1998 Mustang gt o2 sensor codes question. Ford Mustang Oxygen Sensor Replacement Cost Estimate A Ford Mustang Oxygen Sensor Replacement costs between $260 and $276 on average. This voltage tops out at 1 Volt. P0171 and P0174 Codes – Don’t change an Oxygen Sensor Before Reading This. Code P0155 is part of a family of codes, listed as follows: P0141 – Sensor Heater Circuit Bank 1 Sensor 2; P0161 – Sensor Heater Circuit Bank 2 Sensor 2; P0135 – O2 Sensor Heater Circuit Bank 1 Sensor 1; P0155 – O2 Heater Circuit Bank 2, Sensor 1; For more information on the. It turns out that the installer, not having a long enough lead of the front sensors, put the rear sensors in the headers. (S197 - 5th Gen - 5. 3 LX running rich, hesitation on acceleration, high and hanging idle Help!Svt 6lMustang o2 eliminator Mustang o2 sensors sensor oxygen gt 2005 6l engine emissions motorcraft lmr eliminators milO2 svt bypass. 6L, 5. Your car or truck has either a P0171, P0174 lean fault code or both stored in. Moving inside the car, locate the male plug on the other end of the wiring. #1. 2007 - 2007 Ford Mustang. This guide. It is more evident when the automobile is at idle and/or running at a very low. So Bank 1 Sensor 1 is the O2 sensor closest to the passenger side head (right around where the passenger side exhaust manifold. Regarding the PCM re-learn question. The car used to have cat less H pipe on the stock headers. ECM Monitors. Your 2195 code for the sensor reading rich can be to blame on one of these issues. 4L car (pick up, SUV) is not that hard to do. 1996 - 2004 SN95 Mustang -General/Talk-Sep 8, 2023. The first digit in the number is the Bank ID: 1 = bank 1, 2 = bank 2. 96 (423) SR Performance O2 Sensor Extension Kit; Pair (86-10 Mustang) $62. Find parts that fit We need more information about your vehicle to confirm fit. Get 2019 Ford Mustang Oxygen Sensors parts from our OEM and aftermarket inventory at a low price. #11 · Nov 22, 2010. Please read notes!4. #19 · Aug 8, 2013. Actually the passenger side is bank 1 on these motors as the #1 cylinder is the front-most cylinder on the passenger side. In Stock. please see the NTK Performance Oxygen Sensor - Front (upstream) applications below: 2011 to 2014 GT Mustangs. He said it had this code because of the long tube heads, which makes sense. Front and rear O2 sensors give feedback to the ECM as to the Airfuel mix. 369 posts · Joined 2013. grn 00 gt. Sep 9, 2005. 8v seems rich to me but being steady means that the cats are working properly. Moving inside the car, locate the male plug on the other end of the wiring. 9 out of 5 stars 189. So, is the Blue connector the left and the purple the right, or did I get them backwards? This on a 1998 Mustang GT. I got my 2004 GT about a month ago and it has roughly 190,000 miles on it. Jun 9, 2014. Ford Mustang 2004, Premium Narrow-band Oxygen Sensor by Bosch®. 6. (50) BBK Catted H-Pipe (96-04 4. Catalyst, O2 and heated O2 were not ready. -Faulty fuel injector (s) -Fuel pressure too high or too low. It's going to be hard to get them off but they will budge. B1 S2 and PO156 O2 sens. Aug 12, 2009 52 0 0. 89 2. Mustang Forums. The temp sensor for the computer is located behind the alternator, the lower black pipe going from the intake manifold to the heater inlet. Price NTK Oxygen Sensor 22500 Part # 22500 SKU # 408616 1-Year Warranty Check if this fits your 2004 Ford Mustang $5699 Free In-Store Pick Up SELECT STORE Home. One in front of the converter and one after the converter. Remember: the O2 sensors are detecting oxygen, not fuel, so even if a spark plug is misfiring and there is fuel in the exhaust along with unburned O2, the O2 will drive the sensor to signal a lean mix. Thread starter ddrallstar69; Start date Jan 21, 2012; D. Front and rear O2 sensors give feedback to the ECM as to the Airfuel mix. Did you put the pipe in upside down O2's should maybe up and not down, just a Question. P2272 in the Ford Mustang is a general diagnostic trouble code. Learn More. The heater circuit has nothing to do with how the computer reads the sensors. 5. Won't start codes p0191 p0132 p0053 p2196 p2195. The left side rear O2 sensor will have a violet/light green and a tan/yellow wire. Engine missing is usually caused when a bad oxygen sensor affects the air/fuel mixture and engine combustion. The first sensor I replaced it with was made. Buy Mil Eliminators here: Step 4: Disconnect the O2 Sensor. This jobs just gets better and better. P2196 is a generic OBD-II. 73 gears, Barton Short Throw, JBA LTs, Borla Touring Axle Back, Lito tuned SCT X4. 2002 Mustang GT O2 bank 1/2 sensors 2 bad? Jump to Latest. 920v), the lower the more fuel (0. P0141- O2 Sensor Heater Circuit Bank 1 Sensor 2. Shop 2010-2014 Ford Mustang O2 Sensors. Forums. Using all one gauge wire makes the. Based on what is found in the exhaust gases (as measured by the oxygen sensors), the ECU is then able to adjust the necessary fuel. (Put on a respirator mask. I read some of the comments about reinstalling stock exhaust to clear the o2 and o2 heater sensor monitors.