Changes in v4.1 (1.46.x):
- Added Detroit Diesel 12V71T engine sound.
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Changes in v4.0 (1.43.x):
- Added Caterpillar V8 3408 engine sound;
- Cummins 444 improved and working in multi.
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Changes in v3.9 (1.43.x):
- Added Cummins iSX Straight Piped engine sound.
- Added support for convoy multiplayer working sounds of iSX Straight Piped engine sound.
- Lowered by 1.5 dB Cat STOCK C15 engine sound.
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Changes in v3.8 (1.43.x):
- Adapted to the latest game patch 1.43;
- Added Cat C15 Stock engine sound;
- Added Cummins ISX engine sound (scs reworked sound);
- Added support for convoy multiplayer working sounds of the three CAT (C15 and 3406E), SCS ISX reworked and the Detroit 8V92 engine sound;
- Others engines sounds will be added for the convoy multiplayer later. 
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Changes in v3.7 (1.41.x):
- Added Cat C15 engine sound. Big thanks to Sebastien for the recordings; 
- Added Support of the megapack for the International LT.
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Changes in v3.6:
- Added Cummins N14 engine sound
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Changes in v3.5:
- Added Volvo VNL D13 engine sound, thanks a lot to KW900 for his recordings !
- Rebuilded and added the SCS DD15 engine sound.
- Added my updated Paccar MX from ETS 2.
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Changes in v3.4:
- Added Cummins X15 engine sound. A big thanks to my friend Scott for his recordings !
- Added Mack MP8 engine sound.
- Added support for Mack CHU613 truck mod.
- Tweaked the iSX Signature idle volumes.
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Changes in v3.3:
- Sound pack fully updated to 1.39.
- Added iSX Signature engine.
- Improved all the engines sounds.
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Changes in v3.2:
- Added Detroit DD13-15-16 engine sound for the SCS new 49X WS model.
- Fixed the Cummins 444 keeping playing in the game menu.
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Changes in v3.1:
- Added new engine sound Detroit Diesel 8V92. Samples are from Semi Sound Doctor.
- Added engine sound Detroit Diesel 60 series.
- Improved M11 and Cat 3406E engine brake and turbo sound.
- Improved Cummins 444 series engine sounds. Samples are from Semi Sound Doctor.
- Improved Paccar MX13 with new exhausts sounds.
- Fixed an error with the air gear and air brakes sounds due to updated beta.
- Added support for John Ruda's W900, Freigheliner FLB by Harven, and GTM Peterbilt 567.
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Changes in v3.0:
- added new sound for: Kenworth W900b-GTM, Kenworth T610-GTM, Peterbilt 567-GTM

Changes in v2.8:
- Added new Straight piped C15 Cat.
- Updated the def for the GTMike's T800 (no need an extra patch now).
- Fixed a small error with a 3406 engine def.