RRM Downpipe
Originally Posted by ROCK
There are 4 parts to your exhaust.
Exhaust manifold.- It is pretty good, stock.
Downpipe- very ineffiecient stock
Catback section- pretty good stock
Muffler(axelback)- pretty restrictive.
ROAD/RACE
Exhaust manifold.- It is pretty good, stock.
Downpipe- very ineffiecient stock
Catback section- pretty good stock
Muffler(axelback)- pretty restrictive.
ROAD/RACE

Originally Posted by NonEvo
So can the stock cat attach to the downpipe? Obviously its more restrictive than no cat, but can it just bolt back up.
Figured I'd use this thread to give an update. After about 15,000 miles driven with the RRM downpipe and the defouler fix, I finally got a CEL. It came on after some spirited driving. Quick trip to Autozone and they reset it for me. We'll see how long it goes this time.







