View Single Post
      07-19-2026, 08:44 PM   #3
bmwisme
New Member
United_States
4
Rep
27
Posts

Drives: 2008 135i conv. Sport Pkg.
Join Date: Jun 2012
Location: Germantown, WI USA

iTrader: (0)

Quote:
Originally Posted by ShocknAwe View Post
IMO? No. I'd put in catless downpipes and a good catted mid pipe. The primary cats are a massive restriction.

If you wanna keep the primaries I'd just keep the drivetrain stock and focus on suspension.
Thanks for your input. That's what I thought (catted dp's performance) but just maybe someone made a high-flow that performed noticeably better than stock downpipes.
Catless would be cheaper and perform better but I worry the smell and sound may be off-putting. And of course, against the law.
Appreciate 0