18/20 psi on a k03s.
mine does this as well, just had it mapped and when accelerating in 5th and 6th it feels like the power builds and then cuts out, then gives another burst, then cuts out again and so on.
are there any other possible reasons for this?
I had this and it was my PCV hose, but it was the Y-shaped one rather than the ones under the inlet manifold. Check out my thread week or so ago http://www.seatcupra.net/forums/showthread.php?t=247056