[FRSBRZGT86FAN]

Originally Posted by Suzuyans

Er I should elaborate. Basically the 2nd O2 sensor isn't plugged in. At all.

I know what it is I'm just curious if there's a way to route it.

I didn't install it because the threads came out horribly when the installer took it out of the stock header.

Instead there's just a cap.

Originally Posted by Suzuyans

Yeah he said it was useless since all the rear 02 sensor did was check to see if the cat was working which it wasn't because it's catless.

I have to plug it into the port though right?

Originally Posted by guybo

OP needs to do a little more reading- it's all on this forum. The car still needs the rear of sensor, reinstall it. Tune to get rid of the p0420. Don't listen to what some dude said and don't think so much.

Originally Posted by Suzuyans

Alright cool.

I hope it's doable without taking out the header again. I should be able to slip down under or can do it through the engine bay

@guybo and steve99 is correct, you must have both o2 sensors installed regardless.


I don't know how you expect to mod a car without educating yourself about the mods you're installing. Also taking advice of someone who installed the header that obviously doesn't know this car well enough isn't smart...