Grabbed my Mazdaspeed injectors out of the trunk and tossed them in the turbo ‘91. Seems to have fixed quite a few issues and the car now happily drives on 6 pounds of boost. Now I just need to take the exhaust manifold off and smooth the flange surface off and this car will be done. One of the injectors I took out had a ganked up tip that could have been part of the reason the NA ran so poor.
Friend down the street has a much nicer turbo setup. He was blown away by how fast mine is on such a low budget, though.