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Yep. Difficult and expensive to squeeze meaningful extra hp out of our lil 2.5ers. edevlin has about the most you can get out of a 2.7 with bolt-ons and tuning. He did it right. It was a long process to get it right and required serious coin but it now goes like stink.

As with any project, examine your goals. What are you looking for? Simple butt dyno improvements, louder, street stoplight racing (wrong car), dyno chart bragging rights, faster times at the track? Answer this honestly and you will narrow your search a great deal.

I can't speak for others but to me "faster times at the track" is the only thing that matters when modding. Everything else is... er... foreplay. If this is your goal, look around at your local PCA events and see what the really fast Boxster guys are doing. You know, the ones who regularly outrun the GT3s, 997TTs, F430s, and Lambos every week. In SoCal those guys have all done the same thing: Fat sticky tires, tuned suspension, removed weight, honed their driving skills, and left the motor alone. Stock intake, Stock headers, no chip or software mods, no turbo. They just learned to drive these cars really fast. You can too.