Im about to get a WRX, I just came from a turbo'd civic..
I ran my exhaust strait from the Turbo's Downpipe all the way
back up too the ApexiN1 (( I removed the catback ))... I didnt have any CHECK CODE engine lights or smoke coming out the exahust...
**I'am new in the Boxer engine world** so i dont knw too much about em., are there alot of ppl that run ((fastflow cat's, NO cat's at all, OR run em with stock cat's))..
I also, luv the way WRX sound (bubbly). So i would really like to bring that out.......
I'am not too sure if ppl are running with em or with out em...