I have thrown tons of money after this but cant solve it.
I am only getting a peak of 14.X and holding around 13. I am APR stage 1 on a 2006 BPY 2.0T
I have heard i should be seeing more like 18 peak and 15-16 hold.
What i have tried so far...
Made sure it was in APR 93 OCT Stage 1 Tune
New intercooler pipes
new (used 20K mile) K03 turbo ( mine did have shaft play)
New Revision D (piston) diverter valve
new BSH blockoff plate and catch can.
It was pressure tested by the dealer to 2 Bar he said that was really high but if i am not mistaken i think that is only 13 psi due to natural atmosphere.
I had logged it before changing the turbo but yet to have a chance to log since but before the turbo swap it lagged about 2 PSI behind requested boost.
It also has no codes showing in VCDS.