i have 2000 civic si running with a j&s electronics knock scensor and a vafc controller and a jackson racing supercharger, im not sure that those computers have anything to do with the way my car is running but here it goes; sometimes when im driving, i will press the throttle just a hair, and my vafc shows 2% throttle or so like it should.. but while i watch it, it jumps from 2% to like 12%. it just around all percentage until around 30% throttle. and the motor will stutter and almost cut out i guess. now, it does not do this all the time.. also, while it is doing this. i will not have my foot on the throttle at all, and i look at the vafc computer and it shows 2% throttle or so. after a while this will just go away.. im not sure what is going on. thanks for the help!