Idle problem...

ok I have a 1999 G20t with 60k miles. I always had this problem after the cams but I think its getting worse. First, if I just sit at neutral position and just rev up over 4k and let off..my idle comes down and dips down and comes back up....Another scenario, I'm coming to a stop light...put in neutral as rev gets around 1500k and rpm drops again and bounces back up...it doesn't seem to be really low rpms but low enough that you notice it and slightly feel it. Now this happens everyday and I think ever since I got the cams installed. I never stalled though. I did once but I reved on neutral to 6k and it came down and stalled. After that I never did that again. I didn't think of it much because I thought it might be because of the cams. I asked a friend and he said it might be because of the overlap from the cams....but not 100% sure...Anyone know if this is correctable? Oh and I think I have the S3 cams.

You think you have S3's? S3 have been reported to have stalling problems when the engine is cold. S3's are also known to have slight idle problems without the JWT ECU upgrade.

Yeah I think....cuz I got the cams for free for the Import Tuner power pages but they didn't tell me which cam it is....JWT doesn't remember when I called and told me to measure the lobes but screw that....I am guessing S3...