MOVING SALE Hypertech Max Energy E-Con Model #33001 New in box, never installed! Fits 2001-2005 GMC / Chevy Duramax 6.6 liter -improves fuel economy -more horse power & torque -50 state emissions legal -internet update-able -easy plug and play installatioItem 
specifics Condition: New Modified Item: No Brand: Hypertech Custom Bundle: No Non-Domestic Product: No Manufacturer Part Number: 33001 UPC: Does not apply n