Originally Posted by 335ixdrive2009
My friend who ran catless dps on his 135 with 20k miles and broke a turbo. Do they not cause damage?
1st, smack your friend
2nd, he was prob running an overly aggressive setting or just had a bad turbo. Catless DPs yield the 2nd most HP-gains with bolt on parts (after a tune) and help the turbos breath a lot better (so they're actually less stressful then the OEM catted DPs)