GMC Sierra Bully Dog Power Pup Downloader Tuner - Diesel - 43569

Fits: 2001-2008 GMC Sierra 6.6L Duramax (LB7,LLY,LBZ,LMM)

The Power Pup Downloader is for those looking for more power for towing and performance, or for the extreme driver looking to decrease their time in the quarter mile. The Power Pup increases horsepower and torque be re-flashing the vehicles Engine Control Unit (ECU). Installation takes place in-cab by plugging the Power Pup into the OBDII port. The Power Pup gives the user four horsepower settings to choose from: Stock, Tow (50-70 hp), Performance (75-90 hp), or Extreme (95-120). Extreme is not available for the LMM.

Vehicle Applications:

GM '01-'08 LB7, LLY, LBZ, LMM

The Power Pup Downloader is a programmer/tuner that downloads horsepower and performance enhancing programs into '01-'07 GM Duramax with either a 6.6L (LB7, LLY, LBZ, or LMM) diesel engine in one SKU (stock keeping unit). The Power Pup will also work on the '06-'07 4500 and 5500 series vehicles as well. The downloader offers up to three different Engine Tunes above stock to accommodate various driving conditions. Stock: Choosing the Stock engine tune will result in no change to engine horsepower output. All other downloader features can still be accessed if the Stock engine tune is chosen. Tow: This engine tune is recommended for use while towing, it is a mild tune that increases performance by 40 to 50 horsepower. This is the only tune that we recommend you tow with other than stock. Performance: This engine tune will yield up to 75 extra horsepower. Pyrometer and boost gauges are highly recommended while using this tune. Extreme: This engine tune will yield up to 120 extra horsepower. Pyrometer and boost gauges are highly recommended while using this tune. This tune is not available for the LMM engine.