CAT C-15 MBN Sound & Engine Pack Proudly introducing the CAT C-15 MBN Sound & Engine Pack. All sounds were professionally recorded from a Peterbilt 378 which has 5-inch straight pipes and a 475HP CAT C-15 MBN engine. Full engine sound set professionally recorded from the engine, intakes and exhausts. Complete engine RPM spectrum recorded, producing a very detailed sound. Authentic jake brake sound including 3 stages. 475, 500, 550, 600, 625 HP engines Will work with all default trucks and popular modded trucks Open Definition files for modders. Full support for Convoy mode. Compatible with: ATS v1.46 Credits Robinicus, modze, Harven, Full Tilled Gaming