Version 4.0: 1.27-1.36 ats game version -Hi guys this mod change standart scs kenworth trucks engine sounds with real sounds and ı add new engines with sounds for kenworth trucks. VERSİON 4.0: -New Caterpıllar c18(hett) engines with sounds added for kenworth w900 -Added new company trucks with new sounds. VERSİON 3.0: -Added new DD60a engines with sounds for kenworth w900. -Kenworth t680 all engines completed(torque curves,prices,consumption,def,jake powers..) -Added new company trucks with new sounds. VERSİON 2.0: -Company trucks added you can try all sounds in quıck jobs. Kenworth t680: -Added new Detroit diesel 15(dd15) engines with sounds.(2017) VERSİON 1.0 Kenworth t680: -Cummins x15 engine sounds added for vanilla cummıns engines. -I dont touch orgınal engine sound its Paccar mx engines sound(old). -Added new cummins 444 series engines with sounds. -Added new detroit diesel series 60 engines with sounds. -I rework all engines torque curve,def and fuel consumption etc.. -All engine prices are optimized. -Retarder sound added Kenworth w900: -Cummins x15 engine sounds added for vanilla cummıns engines -Paccar mx-13 engine sounds added for vanilla paccar mx engines. -I dont touch orgınal engine sound its Caterpillar engines sound.(its nice sound) -I rework all engines torque curve,def and fuel consumption etc.. -All engine prices are optimized. -Retarder sound added. HAVE FUN! Credits: voıth, Kriechbaum