well, i bought a '92 cx hatch about a week ago.. d15b8, sweet ass 70hp motor. anyways, the guy i bought it from has it mod'd a little (god knows why). one of the things he added was a skunk2 cam gear. here's the problem.. it doesnt idle worth a shit. if i just start it and let it sit in the driveway it will idle all day long. but once i start driving around, when i come to a stop the idle gets real rough and unless i keep giving it gas it will die. i let a few service techs at the isuzu dealership i work at take a look at it, and i got different opinions. one of them seems to think the cam gear is too far advanced. but would that affect the idle? i thought the cam gear changed valve timing, not ignition timing? the other guy told me he thinks its probably the iac valve. he recommended i start by changing the o-ring and see if that solves the problem, so that is what im going to do. makes sense, i guess. i just wanted to hear some other opinions! also, oddly enough, i guess, when the ac is on it idles fine stop light to stop light.. well, for the 10mins or so i was driving around with the ac on at least.