The car has crower stage 2 Na cams, with fidanza cam gears, brian crower 4g63 spec valve springs, walboro 255 fuel pump, and the normal exhaust and cai. The car is also running a Modern Performance Manual IAC. It still idles around 500-600 no matter what I do and, it also revs up and drops when I have the clutch pushed in and I am rolling. Shed some light on my issue.

So with the manual IAC all the way out it still idles at 500 rpm?

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2012 2500HD LML

It does raise it when its really far out but it jumps from 500 to almost 2000 and also right now when i let off and it's in gear it wants to hold rpms around 2100 and not slowing it self like it should.

Going to sound kinda dumb but by chance is you throttle cable sticking? Or you may have an unseen vacuum leak.

Finish? What is this "finish" you speak of sir? Dsm's are never complete just temporarily put together.

97 eclipse gone but never forgotten Ill miss you money pit.