2020 G20 BMW M340i Active Autowerke Catted Downpipe

Comparison of exhaust notes from Active Autowerke HiFlow Catted Down pipe from stock on 2020 G20 BMW M340i Cold start 0:17 Stock Comfort Revs 0:41 Stock Sport Revs 1:03 AA Cold Start 1:36 AA Comfort Revs 1:53 AA Sport Revs
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