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04-06 Engine Tech LS engine tech center. Get the most out of your car here.

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Old 07-10-2007, 05:25 PM
Gary Drexler Gary Drexler is offline
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Join Date: Jun 2007
Posts: 7
Default '04 GTO - Best Performance Increase ?

What would the best bang for the buck to increase the performance of an 04' GTO,
without compromising the integrity of the engine, or exhuast?

1) nitrous oxide kit (how much $$ to refill the bottles)
2) heads / cams pro performance package
3) cut out mufflers only and replace with straight pipes
4) reprogram factory computer settings with an SLP Predator
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Old 07-10-2007, 07:50 PM
Will Will is offline
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Best bang for the buck is definitely going to be nitrous. No other mod you've mentioned is going to add 150+ horses at anywhere near the cost of a nitrous kit.
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