Descriptions:
This mod contains the Paccar MX-13 engines, where most of the sounds are originally from the DAF XF truck from Euro Truck Simulator 2, with environment adaptation for American Truck Simulator for the greatest possible realism.
The engines they contain are:

-MX-13 405 HP
-MX-13 430 HP
-MX-13 455 HP
-MX-13 485 HP
-MX-13 510 HP

They are adapted to the following trucks:
Peterbilt:
-387 (Ch_Vitalik)
-386 (R.Modjeski)
-389 (SCS)
-579 (SCS)
-579 NG (HKV Studios/FranckPeru)

Kenworth:
-T680 (SCS)
-T680 100th Anniversary
-T680 NG (Warryor3d)
-T880 (FranckPeru/Galimim)
-W990 (FranckPeru/Harven)

Note: Added 5 Eaton Fuller transmissions for more variety for the Kenworth T680 100th Anniversary truck.

Do not re-upload this mod on sites not authorized by its author, just download them on Sharemods with the author’s name, eelDavidGT.

Updates:
v 1.1
– Added the Brake_turbo audio track in the engine, this for more realism in the game.

Credits:
-eelDavidGT (update to FMOD & file modification)
-Kapitan Kriechbaum, Alberto Ríos, SCS (sounds)

Authors:
-eelDavidGT (update to FMOD & file modification)
-Kapitan Kriechbaum, Alberto Ríos, SCS (sounds)

Download Link 2: Download mod