This mod is Cummins ISM with straight piped sound for SCS and modded trucks Version 1.0 Feature: Cummins ISM 280-500HP with straight piped sound Custom sound attenuation for realistic sound fade off with distortion effects Custom exhaust distortion for realistic exhaust tone and works along with custom attenuation Custom sound orientation for realistic sounds from different angles Realistic turbo behavior Included idle jake brake system Included Improved Customizable Additional Supported Trucks (CAST) in the mod Credits Slav Jerry - sound samples, mixing and modding