This ISF has the Meisterschaft catback exhaust with the Meisterschaft midsection (section 1 pipe)

In my opinion and by many others that have heard the car, it is by far the best sounding/loudest exhaust made for the F. The GTC means it contains a controllable EV system which allows you to control your exhaust flow and also exhaust sound by a wireless remote control.

Video recorded with an Iphone 4s.

For more info regarding cost, performance, sound, etc...Shoot me a message!