Version 8.1 Changelog:
-Updated the attenuation system to the same used in Gen 2 Cummins
-Other minor adjustments
-Renamed def files, this mean if you have truck using engines from this mod
you'll have to enter customization and select the engine again
-Removed "Detroit Diesel" from the engine name to save some space
-The engines are now labled as "Straight piped"

Version 8.0 Changelog:
-Changed displayed engine name from Series 60 to 60 Series (major update, I know)
-Brand new engine and 14L exhaust sounds, huge thank you to 60Series John for recording the engine
-14L varient now only have 2 stages of jake brake
-11.1L variant now have a single stage jake brake (it's not good by any means, but it's there)
-Added 600hp tuned options for both 12.7L and 14L
-Added automatically activated engine fan
-Basically total sound rebuild

Version 7.5 Changelog:

-Added 14L VGT engine with realistic VGT behavior

-Added 575HP and 900HP 14L tuned engines with rev limiter

-New 14L exhaust load sound

-New 12.7L stage 3 jake brake sound

-Minor loudness changes

Version 7.2 Changelog:

-Compatibled with Jon Ruda W900

Version 7.1 Changelog:

-Fixed audio clipping

-Compatibled with Rezworth W900