Well, it is a bit strange and i can't figure it out. I just put in a b18c1 in my 92 hatch back, and everything runs fine until i drive it around on the highway or keep higher revvs for a period of time. The car will start to bog out and loose all power then the temp guage starts to go up. I have drained the system and got all air out, i also took the thermastat out to see if it was that. It is not throwing and codes, anyone have and idea??