View Single Post
      03-14-2012, 03:36 PM   #9
RnmEvo9
Banned
247
Rep
1,827
Posts

Drives: 2007 335i
Join Date: Apr 2011
Location: Pembroke Pines, FL

iTrader: (2)

All downpipes taper down to 2.25-2.5 to mate up to the OEM catback, even AR downpipes. The sound difference will mostly depend if you have an aftermarket exhaust or not. If you still keep your OEM catback, the sound won't increase too much but it will definitely sound sportier especially WOT.
Appreciate 0