i am planning to get teh supercharger from PES once it come s out with one the athe 3.0 a4. after a while, i will want to mod some more but what is after a supercharger that will give a pretty good gain....

need additional power on top of it? You'll probably very seldom have the chance to use all the power the SC will give you on the street without killing yourself, unless of course you're just a redlight-to-redlight hopper, then I'd suggest you sell the A4 and buy a Camaro.

don;t telll me go get an m3 then or an s4...=)

Drive the car around some, and determine if you really need more. If so, there are most likely different pulleys available for the SC, which will spin it faster.

At least it's an option. :) A pal with an S/C'ed pontiac GTP(?) swapped pulleys and went from 8psi to 14psi. There are other supporting mods which need to be in place to ensure that you don't grenade the motor, but it's probably doable.