wingrider -- the GM tech, that advised of the bulletin, works for a GMC dealer and he advised the speed shop of the repair. I will call and see if I can get this info personally. Stay Tuned!
ntmmd8r -- your response from Magnacharger is the same as my speed shop received concerning the problem but unfortunately that wasn't the answer. The speed shop that I utilized is an installer and was recommended by Magnacharger and they knew of the same repair as yours, but called Magnacharger to see if they had other ideas. The GM tech loafs at the speed shop after hours and advised of the repair during a "bench racing" session. Unfortunately, it seems my regulator broke at the same time as the install. I had the speed shop send me the diaphram and it definately had a hole in it. I didn't use the GM warranty to keep the BS down. The speed shop will be sending me the dyno charts after they reprogram the computer and after changing the pulley to a 2.85" instead of the standard 3" to gain a little more power. I will send a copy of the dyno charts to Jim G. once I receive them for his "think tank". ( NOTE: Magnacharger doesn't allow you to change the pulley without voiding the warranty )