[6reasons2live]

ok so im installing a true dual exhaust on my car and i want to eliminate the cats....what do i do so that i dont get a check engine light for my o2 sensor?

[Playboiplay]

Use a handheld tuner to clear your engine's trouble codes.

[ewells2420]

Originally Posted by Playboiplay

Use a handheld tuner to clear your engine's trouble codes.

That wont work, they will come right back. The 02s have to be turned off via the tuner or get mil eliminators. Which can be found at most online mustang stores like Americanmuscle.com

[236Mustang]

buy a handheld tuner and turn off ur rear O2 sensors

i have no cats and did that with the tuner

[Shine1Stang]

+1 with 236!
Just clearing codes will not work. Cuz the next time the cpu runs a diagnostics it will come up again. So by buying a handheld and turning off the rear o2 your telling the cpu to not check that function and thus no codes are thrown.
Sometimes, depending where you get the handheld from, you can specify that you want things like the rear o2s turned off. Check out vmptuning.com for handheld sct tuners. Hes one of the best in the business