CAT 3406E 2WS Straight pipe sound v1.0 1.55

This mod is CAT 3406E 2WS engine straight pipe for some SCS trucks and many modded trucks.

Latest Version Feature:
– CAT 3406E 2WS 435-550HP and 700HP Tuned engines with straight pipe sound
– 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