Wow I have been seeing alot of "NO BOOST?!" problems lately...its really hard to make a car not boost at all. Hell, I had my compressor outlet pipe come unbolted and with a 1/4 inch gap the car would still make 10psi...it was just really slow.

You pretty much have to have a massive exhaust leak that would be obvious(like cracked manifold or turbine housing), a coupler that has a huge tear in it, or possibly the wastegate or maybe the BOV is stuck open.

Inspect the entire intake system, look at the exhaust for cracks/whatever...look at the turbo and there will be a little metal cylinder thing with a rod on it that goes diagonal down towards the exhaust(this is the wastegate actuator rod)...push/pull on the rod to see if it seems frozen up..


But personally if that car has been modded at all (probably has) then I would stay away from it, who knows what else lurks...lol GL