I remember seeing this and being surprised. I've got the same setup, plus a bit more and dynoed at 244rwhp.
IMHO, 300 FWHP is about the best you'll get from bolt-ons with the 3.2.
I do not think the original poster's question is possible without other work.
Quote:
Originally Posted by KRAM36
It takes the right combination of parts to get more power out of these engines. On a 2003 Boxster S with a Tiptronic trans I believe 313 HP can be obtained possibly more with no internal mods to the engine itself, a manual a little more if you're willing to go catless. Not cheap to get there, but it can be done.
Example: Boxster S Manual, not sure what year it was.
Mods: Stainless silencer (muffler) and manifolds (headers) - K&N panel - 75mm throttle body - custom 83mm intake - custom remap - MDS underdrive pulley.
Got a dyno of 271.9 HP add in 18% drive train loss = 320.84 HP. If he had done a complete air intake upgrade, at the least would be an extra 5 HP and would be 325 HP.
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