swapped out the plugs (ngk iridiums) for my 104s, didnt seem to make any difference. Also swapped out all the coils, didnt see no change. I did get the harmonic balancer swapped out and that took care of the knocking and keeping the battery charged. Also got the whole exhaust cut off at the downpipe. Car seems to start up and idle fine, revs up fine too but you can hear some hesitation when you do. Took the car up the street and shifts and drives fine under normal acceleration, but as soon as you punch the gas it pops and sputters and doesnt take off at all.