ATS - Cummins NTC Big Cam Straight Pipe Sound V4.0

Version 4.0 Changelog:
- Rebuilt the entire mod
- Revamped engine files and specifications

Feature:
- Cummins NTC Big Cam 240-400HP engines with straight pipe sound
- Extra detail enhance on engine sound like turbo, blow off, jake brake
- Custom sound attenuation for realistic sound fade off.

Authors: Slav Jerry - sound modding and samples