Hi guys,

I've got a 02 CTR and i've got a slight hunting problem which only occurs once the car is warmed up and usually after sitting on the highway or at a consistent RPM for more than 10 seconds. It sounds like a slight lope, similar to a car with upgraded cams however the bounce is only 100rpm if that. Also, i have a slight rev hang when shifting from a gear to neutral while rolling. The rev tends to hang at 1500rpm until i come to a complete stop then it settles slowly to 1000rpm. If i rev the car while warm to about 2000rpm and release, the revs tend to hang at 1400-1500rpm then drop down suddenly to the correct idle RPM.

Current mods are:
Ported RBC manifold
S90 70mm throttle body
K-tuned adapter plate
Injen CAI.

I have also cleaned the IACV and removed all carbon residue from both sides, and the valve itself. Furthermore, the car isn't throwing any codes as i checked with a scanner.

Any help is appreciated, thanks