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Old 06-27-2009, 08:54 AM   #23
Matt TuneTime
Drives: 2008 G8 gt / 2010 Camaro L99
Join Date: Oct 2008
Location: Lakewood
Posts: 193
Originally Posted by Crowley View Post
Id bet on at least 10rwhp or a little more for a good 3 inch catback/axelback

max 5 whp

Originally Posted by Tom@ARH View Post
I doubt it's even half that. We pulled the axleback off the G8 during testing and saw 3hp. You won't need a 3" catback till over 500rwhp
We have gone over 550whp with the g8 with stock axleback dropped it and picked up 7 whp ..
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