it's mass produced it will have issues. The cars have issues too. Granted not as many, because the aftermarket is better for the cars (ie more people mod cars than trucks) diablo is not always at fault though the 03 pcm is uique to 03 and the 04 trans controls have not been nor will they be cracked by diablo. (they gave up on the 04's) the 05 and up have full cotrol.