hey conrad..here's what i learned after I got over the HP Mod bug...the most that i will gain are 10 hp unless I will go all out and feel the difference w/c is engine swap and it will cost $10k and the most important thing that i learned is..
-Invest your money on D/E
-Go Autocrossing
-Sign up on next Thunderhill
*hopefully someone will chime in in regards of the 3 above
It's all worth it...by doing this, you will really feel and learned what your Boxster is made of!
i haven't done any of those 3 but will AX next month @ Monster Park and I know some boxster owners who've done it and hearing what they would say about it makes me want to forget about adding mods
x1 for Bruce
IMHO
-Gerry