hi all i had purchased a vl it was original n/a the previous owner put a turbo head and all the original turbo running gear it has turbo injectors and stock t3 turbo computer 2.5 inch exhaust from turbo back inside of catilac converter smashed out i had put a boost gauge in just to see what boost it was running and it was 7psi when you are driving and it comes onto boost it has a little bit of a kick than nothing it just stops going and stays on 7psi it feels like it is being restricted by something would anyone know how i could find out what is causing this the car has a stock over boost valve but i dont think it would be over boosting on 7 psi thanks