I've had a s2000 tb on a skunk2 ITR manifold for a while. The only way i could adjust idle was to adjust the screw that holds the throttle plate open slightly. I know other throttel body has a screw that you just use a flathead to change. I want to do something like that with this tb. Anybody have any idea?

 

Check s2k forum.

 

Try adjusting the iacv duty cycle with a tuning program