Ok please read all of this before you post reply. Ok i have a 1991 Honda Civic (not CRX) Jdm Z/C DOHC. My problem is that when i have the number 1 cylinder plugged in as i should it backfires through what sounds like the exhaust manifold. I have replaced the Dizzy about 6 months ago i have new plugs and wires, i checked the timing 3 times (ITS RIGHT). Someone once told me it could be a number 1 cylinder sensor or something, but than someone else said that they NEVER go bad. When i unplug the injector or just pull the wire from the number 1 cylinder it does not backfire just runs slow until now, now it does it all the time..Please Please Please help me im so sick of this car right now. Hit me up on my email also email@example.com or my AIM- mrbangbangsir p.s. this is not a new swap i have been driving it for about a year or longer ALSO if i cant figure this out where do you think i could take it to get fixed????