Hi Guys,
I have recently purchased a Vorstiner Titanium Exhaust system and am waiting to fit the system onto my E92 M3 upon my return home from work trip next weekend.
I am a little curious and want to ask if anyone has heard of any High-flow cat down-pipes under development.
Example:
On my previous (B7) Audi S4 Advant and current (R53) JCW MCS, I fitted the Milltek 100cell high flow cats and non-resonated Cat Back.
Anything similar to that extent? I have read that some guys have chopped off the secondary CAT for the claim of improved flow and performance however i am just curious if there is an better alternative than cost effective chopping.
open to suggestions and opinions.