anyone know if there is any internal engine mods for xb? ...... what about aftermarket throttle body? im just trying to find out where i can get extra hp from ? im aware of the usuals: intake,headers,exhaust,turbo/superchargers.
.. does stuff like ground wires help alot?[/b]

perrin has lighter crankshaft pulley, fuel rail
agency power is working on the lighter flywheel

vividracing.com has info on these

i'm thinking about pulling my throttle body off and seeing how rough of a transition there is between head and tb

Hey Lip did you ever get around to check out matching the throttle body to intake?

how much do the lighter pulleys help in response

Pulleys really do help out a great deal with throttle responce and better acceleration. I highly recommend the new 2 piece kit from NST, www.NonStopTuning.com :)