4l80E intermediate 5 clutch stack with BTE drum
Thread Starter
Joined: Jan 2017
Posts: 547
Likes: 66
From: Clarksville, Tn
THis was in the back of my head because I drive the car on the street and it gets into boost pretty easy so thought maybe I was getting the frictions that way. Trying to decide if I plug the epc or just set 100dc across the board in my tune.
i see this commonly when dealing to tuners
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)
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)
Thread Starter
Joined: Jan 2017
Posts: 547
Likes: 66
From: Clarksville, Tn
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.








