Description

Version 2.0 Changelog:
Total mod rebuilt
Yeah that one changelog totally does the job.

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

💡 Others also downloaded: Reefer Trailer Sound Addon 2026JUN13, Sierra Nevada V1.12, Reefer Trailer Sound Addon 2025 11 07.

Compatibility: ATS 1.55

Authors: Slav Jerry

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How to install this mod (Full installation guide)

Download and extract the mod. File extension should be .scs (ModsHost download guide).
Find the mods folder on your computer
- Windows – /Documents/American Truck Simulator/mod
Copy the downloaded file to your Mods folder
Launch the game and enjoy your mod!

Problems? Let us know in the comments! Your feedback helps modders improve the mod. Also, be sure to check the comments section - other players may have already shared solutions to common issues.