View Single Post
      02-02-2013, 08:11 PM   #5
LarThaL
Colonel
LarThaL's Avatar
128
Rep
2,867
Posts

Drives: 2011 M3
Join Date: Apr 2011
Location: West Springfield, MA

iTrader: (0)

Quote:
Originally Posted by SROC5 View Post
Doesn't the Challenge Street X-Pipe do that already?

http://challenge-usa.com/blog/produc...x-pipe-street/
Stock mid pipe has secondary cats + a set of resonators. Challenge has no cats but only one set of resonators.

I was referring to simply cutting the stock secondary cats and welding resonators. This would give you a 4 resonator/no secondary cat set-up
__________________
2014 Audi S6 * 2015 Audi S3 * 2015 Porsche Cayman GTS
Former 2011 BMW M3 owner