Detroit Diesel DD Series sound fix for ATS This mod only replaces the sounds of the Detroit Diesel DD13, DD15 and DD16 engines, in the Freightliner Cascadia, Western Star 49X and 57X trucks. You may have conflicts with other engine mods that replace this engine, so he suggests you change the position of the mod in your mod manager or simply disable the mod that causes them. v. 1.1 -Added Western Star 5700XE (SCS) Credits: eelDavidGT, SCS