Hi Walter Hunting idle is fun. AUJP I thought was a 730 calibration? It works then it works.. One thing to try is reversing one of the pairs of leads to one of the IAC coils. Sometimes these end up wrong. Also try increasing min air. Get your counts around 1 or 2 Pintle shape is also critical. A blunt pintle makes for oscillating idle A more tapered one is better. gl:peter