Check and remove your air pump. (i had the classic surge that would go from 1k-2k rpm's every second or two). PFC is my computer and after adjusting my bleed air idle screw under the throttlebody it didnt help. Once i installed my greddy pulley kit and removed the air pump the car idle's perfectly. Make sure you cap off the tube that goes to the exhaust or you will get exhaust gas in your engine bay and it sounds bad (its the lower one).

Also my ACT prolite(with counterweight) + 400flbs clutch kit work great. Starts are a little rough but once you get the feel of the clutch its great and rev's really good now. And it didn't make the car vibrate.