Cummins Signature Sound & Engine Pack Features: Full engine sound set professionally recorded from the engine, intakes, and exhausts. Complete engine RPM spectrum recorded, producing a very detailed sound. Authentic Interbrake sound includes 3 stages. 600 and 1000HP engines Support for over 90 trucks including all default trucks and popular modded trucks such as the Rollin 389, Jon-Ruda W900, etc. Open Definition files for modders. Full support for Convoy mode. ATS 1.46 Credits zeemods