Cummins Signature Gen II sounds v1.0 1.55

This mod is Cummins Signature Gen 2 straight pipe and sport mufflers sound for SCS and modded trucks.

Latest Version Feature:
– Cummins Signature Gen II 520-620HP with straight pipe sound (Straighties)
– Cummins Signature Gen II 520-620HP with sport mufflers sound (Sporties)
– 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