Steele Productions Cummins ISX15 - 1.45

This engine pack modifies the Cummins ISX15 engine torque curve and gear shift points for the stock trucks. It doesn’t modify the sound effects or add additional variants to the engine.   The pack includes the 450hp, 500hp, 550hp and 600hp variants for the following stock trucks: Kenworth W900 Kenworth T680 Peterbilt 579 Peterbilt 389 International LoneStar International 9900i Volvo VNL   For ATS 1.45     Credits davidsteele1975