Wow, and I thought my ears were still ringing from an OEM exhaust mod (bypass method) that I did Friday. That's plenty loud for me, already got a few looks in my neighborhood. Not sure if they were good or bad.
Just ordered my parts for the same issue as you. $666.xx
Hope that's not a sign of things to come
P.S. What State are you in btw?
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Current:
16 F82 M4 GTS, Black Sapphire/Black, DCT
08 E92 M3, Sparkling Graphite/Bamboo Beige, 6MT
07 E85 Z4M Roadster, Alpine White/Red, 6MT
99 E36 M3, Techno Violet/Dove Grey, 6MT