What is the best exhaust housing and turbine combo for a s475 ... Running a t4 1.10 83mm turbine can't stay on top tired a .90 runs 70 psi.. When rpm below 3300 falls under
I ran a 3x3 with a 2.8 bushing for a few years with the .90 housing. My truck loved that turbo. Above 4000 rpm drive pressure was high. Would fall off the turbo around 2800.