i installed the throttle body on my car today and sometimes when i barely start to give it gas the pedal has a slight vibration.so its got to be the linkage but i double checked it and it looks fine.i was thinking also could it be that with my car just having the cc306 installed the rough idle could cause this btw its only noticeable in gear and not in park or should i say going into gear.is the gain better adding the tb to a cammed car then to a stock car hp gain wise?