Jim makes a lot of good points and has way more dyno experience than I do, I am pretty much a raw novice in Boxsterdom, but I am having a great time. Somewhere in my travels I saw a graph for the HP and torque for a base 2000 boxster, but I cannot rember where I saw it. If anyone has data on a dyno run on a base 2000 I would be interested in seeing it.
I have experienced the variability in similar cars that Jim is referring to. The shop that chipped my car also did another 2000 2.7L boxster that was very muck like mine. That car was setup almost identically to mine, same intake and exhaust mods. The only difference was the other car had true one-bolt wheels (not sure what you call that configuration) which were probably lighter than my aftermarket Carrera wheels.
Anyway, I had a chance to drive that car and it seemed MUCH quicker than mine. The tuner also thought the other car was much faster than mine even though both cars had similar miles on them and again, a very similar setup.
Ed