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  1. Timmay tips + muffler delete: Uneven soot

    E39 M5 and E52 Z8 Discussion
    I recently purchased a header-back muffler-deleted exhaust system off of a local M5board member's car. While I am loving the sound of the new set up, I've noticed something strange. One of the tips is much cleaner than the rest. There's noticeably less soot build-up inside this tip. The outside...
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