So I have one for the pros..
I've noticed after the exhaust has gone on when I'm coasting with cruse on or a pedal position just before engine braking comes on, or acceleration boost is running up to 20+ Psi. . Highest I seen was 26!!!!

When engine braking it's right down at sub 1 psi and under any sorta acceleration it's fine and maxes out at 15 as it should..

Not sure if it's the turbo over running or a faulty sensor??
Could it be not enough back pressure??

Help. I'm now worried about this weekend..
I've got 2000 road k's ahead of me!!!