-CAT C15 6NZ 435-625HP engines with straight pipe sound
-2 jake brake variants
-Automatically activated engine fan
-Exhaust stack simulation effects
-Sound attenuation effects for realistic sound fade off from the distance
-Sound distortions and directional effects for realistic distortions from different positions around the truck
Version 5.1 Changelog:
-Added separate engine variant with different, smoother jake brake sound
(The sounds are all identical except 3rd stage jake brake)
-Reduced exhaust distortion