Stangnsnow2

i have a 1988 mustang gt and i just put a a9l ecu and mass air on the car a long with a 6psi supercharger and now, my car over heats when i rip through the gears. i changed the head gasket a few years ago and i just changed the water pump about 400 miles ago, anyone have any idea as to what is going on here? the car is fine when i dont "boost" it. i cant figure it out, but when it over heats it blows all the coolant out of the cap and it blows a gallon out of there....im pretty sure the thermostat is working properly because the temp will go up a few degrees and then drop to normal ( this is before it overheats)

Colorado_Mustang

Sounds like you're running lean at WOT. Your engine should warm up when you're getting on it, but not drastically.

For blowing through the cap, it sounds like a bad cap and/or a plugged overflow line. Could also be an improper cap.

Stangnsnow2

running lean at WOT? how do i fix that problem of the car being to lean?

Colorado_Mustang

You'll need to take it to a dyno shop and have the computer reprogrammed.

bransdaman78

an intercooler wouldnt hurt... (sorry if you have one I was too lazy to read carefully)