This mod is Mack E7 engine with straight pipe sound for Mack R Series by Harven
Feature:
-Mack E7 250-460hp engines with straight pipe sound
-Detailed sound in engine, exhaust, turbo
-Extra feature for more realistic sound
Changelog:
Version 2.0 Changelog:
-Basically rebuilt the whole mod
-Included 3 stages jake brake
-Included idle jake brake system
-Supported Mack SuperLiner by Dielingwu