Right I have fitted the boost gauge to my car and seeing around 6-7psi then a drop to around 4 psi. Is this wrong or right ?
I have replaced all of the boost hoses, intake pipes, vac lines and have a forge splitR on the car, no change in performance after fitting boost gauge so I think the problem lies elsewhere.
Could it be the n75 ? Or have I missed something ?
Also what's the correct procedure to boost leak check the car via the intake ?