Hi guys had a maf gon on my car couple months ago and it was not boosting correct as when i brough car it hit 15psi on a unkown map. Now i brought a new maf and it did not correct the problem so i unplugged it and used car with it unplugged for a while. In that time i fitted a pro alloy fmic. Now i have been payed i have brought a new maf and it hits 15psi and drops right down to 8-10 psi and does not feel no where near as quick as when maf was unplugged? i can see for boost leaks is it worth buying a new N75? no faults are coming up on vag com, or could it be due to the fmic ?