As I brouse this 24v section this make me ask a question I have. My Idle on my built-up S52 sway is always at 12-300 rpm A/C on/off ,hot or AM cold. I've run It this way for almost 2 years and alway have had this on my finish list. No vacuum leaks ,CIS motors ok and no trottle stcking. T/Body butterfly set correctly and drives sweet . Did I miss a wire signal off the ECU ? I've not heard that camshaft upgrades cause this kind of problem . Anyone to help ?? thanks ,joe