this is on an 87 grand national, but same concept. car only goes to 4lb of boost then cuts off. i'm not good with turbo's and trying to learn. any ideas on what to check? wastegate, boost control, chip, etc.
yep sounds like a leak. The wastegate regulates boost, so it might be stuck open. If that is fine the it will be on the cold side. Best bet is is a leaky fitting on your piping somewere or if those check out might be something with the BOV.