tC Headers

[timescars]

You don't have a CAT, what did you think was going to happen?

you need a anti-fowler (aka non-fowler, 02 bung, CEL eliminator)

here a thread on scionlife
Antifouler / CEL Fix for Header - Scionlife.com

I made one from 2 spark plug non fowlers.

buy 2
drill one out completely.
screw the drilled out one INTO the on modified one
install your 02 sensor in the mid-pipe into the non-fouler

drive 100 miles or reset your computer

Haven't had an issue since 2008 when I installed my header, and haven't had an issue since april of 2010 when I boosted.

Just make sure you know someone at the inspection place.

[navylife59]

Not everyone knows in the workings of the exhaust and emissions system.
How about this more informative DIY from the Tech archives right here at the Club, http://www.club-tc.com/forums/engine...event-mil.html.