I have been having problems with my truck going into REP mode. I have replaced the wiring from the TAC to the T-Body, and tried 2 different throttle bodies. I get P2101 for a restricted throttle blade. The blade moves freely, and it opens completely. When the engine is off I can move the throttle through the entire range of motion, and never get a code. When the engine is running with my LS7 T-Body on it, it will always go into REP if I hold it at about 70% TP, or go WOT. I am using an X-Link on it also. Is there any way to eliminate this problem, or do I have to go with a cable driven T-Body? I have increased {C3906}, and decreased {C3907} without any change on the outcome. I had a pulley on it and was getting about 10PSI of boost, and would occasionally get P2101 when I was going through the traps. I increased the boost to 13PSI, and now I get it all the time.