I tried searching on this but wasn't able to find anything other than this problem exists on the factory 08 manual trans Cobalt's. This is an unmodified tune, the customer is complaining of the idle "hanging", took it for a test ride and it does in fact "hang" at higher rpm between shifts. It's a minor annoyance but he would like to have it corrected.
I tried modifying the Throttle Follower, Idle Coastdown Spark as well as the Clutch Fuel Cutoff enable temp but no dice.
Any suggestions?
Thanks in advance!