I have a 93 chevy with an automatic trans. My problem is that i can only hit 13 pounds of boost in OD with the converter locked up. This is with an intercooler installed and the IP turned up almost 1/2 a turn. Before the intercooler install i could only hit about 14.5. The fins on the compressor wheel of my turbo are becoming rounded looking. Could this be my problem, or is it something else. Also my pickup has 131,000 miles. Thanks for any advice.