Caterpillar 3406E Straight pipes sound v1.0

This mod is CAT 3406E with straight pipe sound for SCS and modded trucks

Version 1.0 Feauture:

-CAT 3406E 475-625HP and 800HP Tuned engines with straight pipe sound

-Custom sound attenuation for realistic sound fade off and distortion effect

-Custom sound orientation for realistic sound from different angle

-Custom exhaust distortion for realistic exhaust tone depends on distance and throttle pressed

-Special variable exhaust tones

-Included Customizable Additional Supported Trucks (CAST) in the mod