my setup is t28, stock injectors, vtech fmu, 255hp, 8psi pump i made the three wire fcd i have it set and it runs great when vehicle is cold but when it starts warming up im gettin fuel cut and ideas....

some 2gs can be finicky like that, some don't need any FCD at all, some need just the home made FCD, some need a missing link, and some need both.

might want to try using a missing link. also make sure your map sensor diaphram (sp) hasn't failed, and causing your stock computer to not register proper partial throttle map readings.