I just wish BMW would offer an M performance exhaust upgrade for 40i. Honestly surprised that they don't as it would definitely be purchased by a good amount of people who went with an M sport and are looking for a sportier sound.
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2016 M5 | Instagram: @black_f10m5
IND cosmetic | M Performance , RKP , 3D Design aero | Eisenmann Race exhaust | AMS catted downpipes | MSR intake | CSF charge coolers | DME Stage 2 tune | KW v3 coilovers | BBS FI | Michelin Pilot Sport 4S
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