My car has had a idle that fluctuates back and forth from 1500 to about 1800 rpm. This has been going on since I put a 93 integra gsr motor in my 94 civic. My car also has some headers, a better intake, and aem camgears, but I dont see any of those things causing an idle problem, besides maybe the cam gears. The car drives fine once moving, and everything else is working just fine, including all of the sensors for the idle, which have all been checked against working sensors. I can't figure out how to fix this and neither can three of my mechanic friends. Has anyone encountered this problem and fixed it, or have any ideas of how to fix it? Thanks.