View Single Post
      08-01-2011, 04:38 PM   #2
M3 Adjuster
Brigadier General

Drives: 1988 M3 gone .. 1M HERE!!
Join Date: Mar 2008
Location: Dallas, Tx

iTrader: (0)

if your last car was a bmw that was normally aspirated, for the most part the motors are designed to have a certain amount of backpressure... so... yes.. you will get more noise but less backpressure, less torque.. and less power.... In essence.. just because it works on a american car.... doesn't mean that a less restrictive exhaust is the key for a BMW.

a simple trip to the dyno likely would have confirmed your concerns on your previous car.

I would recommend going to a dyno now and get a baseline..... and then you will know in the future if your mods are helping or hurting..
Lone Star BMW CCA Chapter president, Chief Driving Instructor

Check out my photos of my West Texas driving tour here..