Looking for help with high egts on my brother's 03. Used to be ok, now gets to 1400 degrees+ with Edge Juice w/Attitude on 5, same problem with Bully Dog Triple Dog on high setting. Truck has BD intake kit, 4" exhaust. Fuel filter and air filter have been serviced, runs fine, no apparent boost leaks as it gets to 37psi on level 5 w/boost elbow, 30 psi on stock setting w/boost elbow. No trouble codes. No black smoke. Almost acts like computer timing is retarded or something