View Single Post
      09-30-2008, 07:51 PM   #5
Brigadier General

kyleb350's Avatar
Drives: F30 335i M-Sport
Join Date: Jun 2008
Location: LoMbard, IL

Posts: 4,193
iTrader: (6)

To answer your question, though, if the downpipes make a gain on a stock engine (w/o any tune), it will sure give you a gain with SSTT. The better the tune, the higher the gains.