Head Bashing 101, Please Help the confusted

[Lukafer]

Hey, I got a 1986.5 model with the 7mge engine. I've been having a problem with the car running sweet when it's cold, but horrible when it gets to operating temperature.

I've replaced the fuel injectors with new o-rings, replaced all the gaskets from the intake manifold up to the throttle body. New o2 sensor and water temp sensor, got a msd blaster coil to replace the old one. 8mm msd spark wires are new, new cap/rotor, oil is good, and compression is 175-180 throughout. No fluid leaks as far as I have noticed.

I just can't seem to figure what would be causing this problem. Is is the mass flow sensor or the egr? If anyone has run into a problem like this before drop me a line, I'd appreciate any help offered.

Lukafer