Originally Posted by M3_WC
Yup, give credit to Weistec. Their kits for the M156 are 50 state CARB exempt.
Yes, agreed. Unfortunately they don't make kits for BMW M3's.
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk