miss-fire is worse at high rpms, and not sure if its just fuel cut, i talked to a performance shop and they also had this problem with another evo and they replaced ignition coil and fixed problem, but i'm not sure if that would fix my problem. the miss-fire started before boost controller but is worse on low and high boost. gas mileage is great between 24-28 street and highway combined. but i'd rather no miss-fire for less mpg.