3" downpipe

Atsushi7mgte

New Member
Sep 26, 2007
203
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35
Oahu, Hawaii
Hey so i had a pretty sweet weekend with some awesome deals

to some it up for $100 bucks i got"
Front bumper (def. needs work...but at least its not smashed in hahaha)
Non-cracked tail lights
Greddy turbo timer
And a 3" downpipe.

About how much of a power gain should i get from the the downpipe??