View Single Post
      09-21-2007, 01:19 AM   #14
retrodrive
Lieutenant Colonel
 
Drives: 335i
Join Date: Jan 2007
Location: Irvine, CA

Posts: 1,938
iTrader: (8)

From what I understand, downpipes add some boost to stock 335. Thus, the extra power. A car with a piggyback does not get much advantage except faster spoolup times.
retrodrive is offline   United_States
0
Reply With Quote