Calibrated Power Solutions (CPS) Home of Duramaxtuner.COM – is the leading developer in North America of performance engine and transmission calibrations for a wide variety of late model diesel power-trains, including Duramax, Cummins, Power Stroke, John Deere, and many more. Since 2007, thousands of satisfied customers have enjoyed improved engine performance, reliability and drive-ability. Headquartered in Marengo, IL, our 16,000 square foot facility includes a three lift, seven bay, full service diesel shop and a one-of-a-kind 4WD Dynometer. As CPS continues to enjoy accelerated growth, there will be exceptional opportunities to its expanding workforce for additional responsibilities and development