Version 5.2 Changelog:
-Slight exhaust tone change
-Minimized exhaust distortion when hitting 1500rpm bark
-New 3rd stage jake brake for main variant
-Minor adjustments

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

Version 5.0 Changelog:
-New exhaust load samples
-FAN SOUND!!!1!!1!!!1!!1
-General sound system improvement
-Fixed 600HP displayed on 625HP engine
-More compatible trucks
-Added optional mod function