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I just got an '09 GT/CS and the mods I have made so far are: ROUSH Extreme Performance Exhaust & ROUSH Cold Air Intake Kit. So my question is, has anyone else that has a manual transmission had a dyno custom tune done, and did it do anything or improve anything? I'm just curious if its really worth the money before I get it done. New to the forum so any help would be greatly appreciated......thanks
Last edited by joedaddy69; 05-25-2009 at 05:18 PM.