I just installed a megan header on my 05 scion tc and at first the check engine light didn't come on, but after driving it around for 2 days and it happened when I turned on my A/C. I restarted my battery and the check engine light went away, but when I turned on my heat the check engine light came back on. Could someone please let me know what I'm doing wrong. I got my header proffesionally installed at Monroe.

 

Did you use any sort of antifouler with your O2 sensor? Search for it if you didn't... you'll get a lot of results. Or check the tech section.

 

what's an antifouler? I just unplugged my old o2 sensor and plugged it backed into the new header? where would i find the tech section?

Thank You,

Mina

 

at the top. Features > Tech

https://www.scionlife.com/tech/

 

Yup. And there's a red search button that the top of the page too.

 

dont forget with megan i heard you gotta use 3 foulers if 2 dont work

 

Thanks I saw the pics. I thought there were only two o2 sensors on the header where's the 3rd one??

 

there is one o2 on the header where you DONT put a antifouler on and the other is on the S-pipe where the antifouler trick needs to be done

 

I just installed a TRD axle back exhaust and it's very very loud and rattles alot when I gas it... I heard it was not supposed to be as loud as the Injen exhaust which was my last exhaust i had on. I don't know if this is from the meagan header I have in the engine or should I just put the stock header back in?

 

Thanks for the tip on the anti-fouler. It worked.. I appreciate it very much..