The Power Pup Downloader is a programmer/tuner that downloads horsepower and performance enhancing programs into 2001-2007 GM Duramax with either a 6.6L (LB7, LLY, LBZ, or LMM) diesel engine in one SKU (stock keeping unit). The downloader offers up to three different Engine Tunes above stock to accomodate various driving conditions.
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