Cummins Engine Diesel INCAL Calibration Manual DVD for HD Trucks Cummins part number 3886398. It is dated June 2014. It is 2 DVDs. No special software or license is needed to operate these. They run on Microsoft Excel. They are not full service mechanical service manuals. They just contain the calibration numbers. Dozens of Cummins engines are covered. See photos and list above. Please note: It is NOT an illegal CD copy. What you see is what you get, I do not use’stock photos’. Please look at my other auctions as I will be putting up many other Cummins truck manuals soon!