Hi, I fitted a manual boost controller today to my a4 1.8t aeb. The problem is that it does not seem to matter where I turn the boost controller to. The boost gauge always reads around 0.5 bar or just under at full throttle, which looks about the same as with n75 on, although the car feels a lot better and is faster no doubt. It occurs to me the n75 could have been faulty and the manual boost controller could just be sh** it, was cheap; or a boost leak. I fitted it between the turbo nipple and the waste gate nipple and left the n75 plugged in, have I done something wrong? Any ideas/help?