today i have just installed my boost gauge thanks to tutorial i used from here but came across a problem when i took it for a drive. The thing is it only boosts to 5 psi but i have a cat back and a pod filter so shouldnt it be at least 7 psi. Another thing, when i start the engine the needle goes to 20 ngm, is this right or should it be on 0. I have a speco gauge. any help would be much appreciated. thanks