I've changed vaccuum lines and rechecked everything.. For some reason aI can't build over 10 lbs of boost... everthing is pretty much stock..any reason as to why? Thanks for the help guys...
Check the Wastegate, and check the plastic Y and make sure it is oriented correctly. It should have the restriction going to the turbo and not the wastegate. It could be the wrong Y causing your problem (wrong size restrictor).
yes, big problem. The restrictor has to be the right size or you will experience the problem your having. Check the buick vendors, some must carry it. If not, I think I have one I can sell you off my old 84 T-type for a few bucks.
Last time I checked I could find the correct part "Nowhere". Called several dealerships and was told it was alltogether unavailable. Found a few vendors who sell 86-7 and TTA units but contacting them I was told they knew nothing of the 84-5 unit. My car is still apart but as soon as I get everything together I too have this problem.