My car is pretty well modified, but i still want to run class and only thing holding me back is the Cat.. Right now i have a straight pipe on it but wouldn't mind switching out cats for races.
Now the question is, which one is the better one or recommended.
Will be doing some Redline Time Attack events
Thanks

 

From my experience with Redline Time Attack they probably aren't going to check for a cat anyway so I wouldn't even bother.

Also, an RX-8 will never have enough power to actually win the street class so make sure you're just going to have fun - not to win. There rules are very HP biased.

I know... I won the street class overall a couple years ago... in a well set up turbocharged RX-7