OK, I brought a MBC from Scarles the other week and have read the tutorial thread, etc.
It is all installed but when testing I was hitting 22 PSI so backed off (FYI Boost Gauge is plummed into the pipe behind the intake, was at 7 PSI before).

I have made sure the Boost Controller was turned right down but getting the above result.
So thought maybe they marked the +/- incorrectly, so turned the other way, so the twist "tap" goes up, same result.

All I can think of is maybe the T has the arrows the wrong way? am going to try turning this around now but just looking for posibilities.
If I can't sort it when I go to the car now I will remove it for now...

Cheers in advance for any help/suggestions given.

P.S. I did search but I couldn't see anything like this (except for possible hose leaks)