Originally Posted by SimonH
Originally Posted by PeterG
Originally Posted by +8Rich
Originally Posted by Jays ex Nero
The standard system looks quite strange with that additional front box...not sure what that’s all about. The MP one if the rear cross box is switchable looks to be almost unsilenced! I assume the cats are mounted by the manifolds and dint form part of this system?

John, I was puzzled by that bypass looking box at the front and as you say can only assume the cats are closer to the power unit. It does look nice and loud I can't wait to hear one for real.


Is it the OPF or GPF (gasoline particle filter) if so its removal helps boost bhp to well over 400bhp. woohoo crazy2


The box at the front of the MMC sports exhaust, is a Heimholtz resonator, they needed to fit it to get rid of a nasty resonance at certain speeds

Simon @ SiFab.co.uk


Thanks for the clarification Simon
thumbs