I have come across a computer from a 89-93 SC (not sure of the exact year, but that body style) 5-spd. I have a 91 SC that I tried putting the computer in, but mine is an automatic. When i put in the second computer the car ran and idled very rough. I wanted to put this computer in because the cooling fan comes on whenever the iginition is in the on position... easier than wiring the fan to a toggle switch. So my question is, do you think the computer just needs some driving time to adjust? Or is it just a bad idea to put that computer back in my car?