Ok, so 2 years ago, i blew my engine (Y8). CAI, water, piston throught the tranny, not good. So, I went to a mech to get it replaced and he put in a Y8 from a 99. My question is are the wiring any different from 96 to 99. Cuz i noticed that my buddy 99 civic ex gets WAY more miles then mine, my average is about 300 @ 10 gallons, he was getting like 430 @ 10 gallons. Is there something that can be affecting it from the newer engine?