I have a 2003 that is just about to go out of warranty and I will need a performance diesel shop in or around Houston, Tx that can give advice for performance mods and work on the computer diagnostics of my cummins... I have done most of my mods, but do not have diagnostic computer. . I took my truck to the dealer for the last time today to have a few oil leaks fixed, and see why I have code P2149 with engine missing bad, wich cleared up on the way to the dealer... . They told me the code was from removeing the chips off of my truck... . Thanks Wesley