Gtp horsepower mods

Asked by Mar 30, 2016 at 09:49 PM about the 2005 Pontiac Grand Prix GTP

Question type: Car Customization

Hey guys just wondering what I could do to get my
2005 gtp to around 300 HP it's not a comp G if that
matters. Thanks!

1 Answer

2,435

Do a Cat back exhaust or headers. Also do a smaller pulley swap on the Supercharger don't go too much you could chip the top of your pistons. Also change your Supercharger Fluid.

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