We have a Borla Catback and catless midpipe for E90 M3 available. The midpipe is nearly brand new with only 8 dyno runs on it. The catback has about 2500 miles on it. Fitment is great.
Catback - $750 + shipping
SOLD!
Midpipe - $900 + shipping
The midpipe is not available yet from Borla, but this is a production piece. On the dyno, the midpipe made 10rwhp/10rwtq on top of a tune/pulley. Here are a few pictures of the system.
PM if interested.
Thank you,
Brandon