Quote:
Originally Posted by e46m3to335i
I didn't notice wastegate rattle at all when my car had bone stock exhaust but it appeared immediately after I installed my catless DP. The rattle is actually so bad that I'm contemplating on re-installing the stock DP or switch it out for a sport cat.
-Nick
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I guess the DP amplifies the rattle? How long did you keep the stock for?