4l80E intermediate 5 clutch stack with BTE drum
max boost oil pressure from the EPC/boost valve circuit = zero duty cycle
min oil is if you crank the duty cycle to that max number (96 in HP tuners, 100 in Holley)
Mine was using TPS rather than MAP as well which probably doesn't make sense for a turbo car as mentioned. Instead I am just going to install one of Jakes EPC plugs and call that done and see where it gets me.
I went back to some old driving logs and even at 20%DC I was getting 160psi so not sure that is my problem, but since anything under power on the street was probably in 2nd gear better safe than sorry.








