CAT C15 ACERT Straight pipe sound v3.0

This mod is CAT C15 ACERT straight pipe sound sound for SCS trucks and truck mods

Latest Version Features:

-CAT C15 ACERT 435-625HP and 650HP tuned with straight piped sound

-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