Ok, I've been having boost issues ever since I got my car chipped, boosting 8-10 lbs. So I thought I had it all solved when I tried unplugging the maf, I was hitting full boost w/o any issues. So I tried two used mafs which gave the same boost as my original (8-10psi, spike and hold). I was almost 100% certain this was the issue seeing no other codes in vag-com and the car working perfectly w/ maf unplugged. So I ordered a brand new maf and installed it and guess what, only boosting 8-10 psi once again. I just don't understand why it can't hit full boost with maf plugged in. Any help is appreciated.

 

Hmm maybe your n75?