I just install a MBC on my 2000 A4 and bypass the N75 and I'm abble to run a t 13 psi in first gear but i'ts dropping a bit and other gears i'm unable to get better than 7 PSI And if so it's imediatly dropping to 7PSI. So I think that I have a leak somewhere but could it be sometihng else? The car is completly stock.. Im gonna chek that tommorow cause I don't have time tonight but I would like to have your opinion.

 

your a newby so I'll tell you the best person on this forum to ask about mbc's would hands down be Cincytt. he will have all the answers.. I also believe there is a sticky on this subject as well. that might help you out too.