Well after several hours of going through posts and prices I've decided on the magnaflow cat back for the tC.

Later on, I want to add the aftermarket header and s-pipe. Here are my questions...

1.) Does the Megan Header/s-pipe combo come with the anti-fouler needed for the s-pipe sensor?

2.) Will the Megan parts bolt up to the Magnaflow midpipe?

3.) Magnaflow claims to have little to no "rasp" even with a header....any personal experiences? I've been through the massive posts out there, I just wanted some updated responses, etc,etc with the full cat back setup from Magnaflow.

Thanks in advance!

-S-

sweet...edited before anyone caught my error ...

 

Header and s-pipe will bolt right up since you keep the stock section of your exhaust that has the catalytic converter.

You will need 2 antifoulers to use with the O2 sensor in the s-pipe, none are needed for the sensor in the header. Reason for the CEL is because the stock header has a catalytic converter built in, which is removed once you put an aftermarket header on. The sensor in the header is reading the exhaust directly from the engine. I believe the sensor in the s-pipe is comparing what it reads to the sensor in the header. Since there is no difference, it thinks there is something wrong with the emissions system (bad cat).

The Magnaflow cat-back removes the stock resonator, so it will most likely sound bad once the header is put on. I highly recommend adding a resonator and a hi-flow cat to help reduce the rasp.