BMW M4 Manhart edition, Valvetronic IPE exhaust System without downpipes, fitted by MSL Performance. Here are the performance figures:
With only Manhart Tuning Box:560.028 BHP795.733 NM TRQ
With Manhart Tuning Box and IPE system without downpipe:575.58 BHP829.69 NM TRQ
10 years ago