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      11-17-2012, 02:24 AM   #2

Drives: 335i
Join Date: Mar 2011
Location: My car is my home

Posts: 2,016
iTrader: (2)

Simple a stage 3 1/4 times dyno runs etc and you should be able to tell.
Stage 3 is supercharged right?
I have a friend with an 06 gt vortech supercharger makes 420whp....all depends on his mods