congrats! def these ls1 motors respond well to cheaper mods! a cutout would also help you a lot over the flowmaster muffer no doubt. great sound, bad flow. keep up with teh cheaper easier mods to get yourself closer to the 12.9 mark!
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1999 Pontiac Trans Am
Originally Posted by 1Bad00SS
What makes you think you could of keep up with me. Have you ever had that car on a dyno?