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HI,
You've hit on a real issue here. Unlike a smallblock V8, which is fairly easy to get 10-30-50HP gains, the Boxster Engine, be it 2.5, 2.7 or 3.2 just doesn't readily lend itself to being modded.
In order to see any increase worth the trouble and expense, you have to get pretty drastic. And then you butt into other issues such as packaging, cooling (both for the coolant, but also the engine bay), reliability (especially the tranny) and possibly Brake cooling issues as well.
Given that it is a convertible chassis, I bet you can also overpower a Boxster pretty easily. I suspect you could easily ruin the car.
That said, rather than try to pump up a Boxster engine, I bet the 996 engine conversion, difficult as it is would be a better improvement. It has already been done, so you don't have to reinvent the wheel as it were and you'd get pretty much the same reliability. Also, You would forego all the problems, plumbing and such of forced induction and probably stay under the threshold which would ruin the overall balance of the car.
Happy Motoring!...Jim'99
Last edited by MNBoxster; 09-23-2005 at 08:04 PM.
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