I have a 2002 chevy duramax that has a hypertech performance tune on it.im wanting to install a ppe tuner but i dont have the original tuner to take off the old tune..i tried having 3 diff dealers flash the computer and they said they couldnt flash it, said i had to have the original programmer?? any suggestions? or anyone want to trade me their stock ECM one so i can download this other tuner? plz text or call 423-762-8165
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