View Single Post
      08-07-2011, 08:54 AM   #9
MilehighM3
Brigadier General
MilehighM3's Avatar
United_States
915
Rep
3,456
Posts

Drives: Harrop E90 M3
Join Date: May 2011
Location: Colorado Springs

iTrader: (14)

Garage List
2009 E90 M3  [6.50]
Quote:
Originally Posted by Len_Beach View Post

Would it be possible to cut the secondary cats out and replace with straight pipe then reinstall the secondaries in place of the primaries?
No. The secondaries are larger than the primaries in diameter. The stock primaries are semi flat for clearance reasons. If you were to fit the secondaries there, they would hang down considerably. Which is why all aftermarket X-pipes do not have resonators or cats in that location.
Appreciate 0