i just heard from a close friend that he just smoked his motor. warped heads and blown head gasket. he just bought a 2001 7.3 with 130,000 miles on it. aftermarket K&N and 4" stainless exhaust. he sent the programmer that came with truck, Edge Evlolution back to the factory for a reprogram. He drove about 200 miles with the chip on tow. he was pulling a small trailer that had midget dirt track cars in it. He said on the way home he couldnt pull over fast enough when the motor started getting hot and he said that was it. Took it in and got the news about the motor. This concerns me about the chip that im about to get through the mail. A tuned TW chip. should i be worried that this is gonna happen to mine? All i have on mine is the 6637 filter and 4" exhaust.