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: problem downloading predator diablo kelvinj 05-14-2009, 12:50 AM buddy of mine has a 2005 chev 2500hd with durmax diesel, all stock. we tryed downloading a predator diablo horse power booster in and it will not download, i have no instructions or trouble shooting on what i can do. any help out there for this problem CRASHNBURN 05-22-2009, 03:30 PM buddy of mine has a 2005 chev 2500hd with durmax diesel, all stock. we tryed downloading a predator diablo horse power booster in and it will not download, i have no instructions or trouble shooting on what i can do. any help out there for this problem Are you trying to copy that tune with hptuners is the problem or just installing it from the predator? | ||