i spent the whole last night trying to idle tune my friend's holden to no avail,,
it idles few hundreds rpm above commanded in target idle speed,,
when i rev it in neutral, hold it steady and leave the pedal it goes slowly back to normal then stalls,,
when i select D,, it stalls,,
car drives just fine,,
it has LS1 engine
ms4 camshaft
243 heads
vararam intake
headers
stock TB (drilled plate)
please, take a look at the attached file and help,,
fix the ve table and it will idle ...and next time if want more help post some scanner logs of what car is doing while running .you might get more help... hth