tag:blogger.com,1999:blog-658680187485302476.post8700611759412759219..comments2023-10-15T01:26:28.659-07:00Comments on 2009gtr.com: 20 hp Gain with AMS Cast Downpipes .Sean Morrishttp://www.blogger.com/profile/01764446879030639598noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-658680187485302476.post-70557120148829314562011-09-19T17:12:47.651-07:002011-09-19T17:12:47.651-07:00With just an exhaust system tuning you can get fro...With just an exhaust system tuning you can get from up around 30-80hp increase. That is awesome and that delivers a lot of power to your car.CGS cat back exhausthttp://www.autotuningstore.com/CGS_Catback_Exhaust--category--711.htmlnoreply@blogger.com