I just need to know what could be to problem and a way to solve this: I start my car up and it revs fairly high.. about 2,200! than after warm up the revs go up and down for awhile before its back at 2,200. Ive searced the forums and the tech article about fixing it.. but it just touched base. Im not an idiot and can figure most things out.. this ones odd.. a few weeks ago i got my car out of storage and it was idleing fairly high.. and so i timed it and screwed the throttle body screw in to bring idles down to about 900! I was like yea i got this figured out.. now its back to being pazzest. Ive unplugged the IAC and the idle goes down so i know it shouldnt be that! I know i have a bad 02 too... like the title says.. theres also black sute... (unburned gas) that drips out the tail pipe! The ecu was chipped to mugen specs (so they say haha) so i know it dumps in a bit more fuel.. I dont think they would at idle but you never know. but when i play with my vafc i can go in to narrow throttle and bring down the fuel from there and it idles a lot better. Im just afraid of it hurting the motor so i dont leave it there! Any suggestions? Im kind of stuck with this ecu so please dont tell me to swap in the normal p13... FIY its an h22.. basic mods... only mods to fuel system is the AEM fuel rail and B&M fuel gauge!