Just thought I'd report back here considering it was this site where I got the information from. My Evo was dying turning into corners, or stopping at lights, anytime basically I'd decellerate to a stop. Much worse with clutch in. After cleaning out the idle valve, airflow meter body, finding a couple of broken wires to the air temp sensors, finding a distributor cap cracked in half it would hold a good idle not moving, and would restart first go. Only when moving would the car die, dropping to 450 ish then just dying. Most unnerving entering a roudabout or a tight corner to lose all power steering assistance. Anyway to cut a long story short, thanks to Steve Brothertons post on the OVP relay causing high resistance and a consequent voltage drop to the idle regulator I pullled the OVP tonight and lo and behold the problem has disappeared. I also saw 0 milliamps at the EHA. Removed the car feels great and no way does it stall no matter the abuse I give it. So hopefully once I get a new OVP everything will be a-ok. Thanks!