v1.3.1
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- Added support for Peterbilt 3XX
- Adjusted RPM & Load seek speeds.

v1.3
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- Increased volume of engine 1dB.
- Increased volume of engine when it is unloaded.
- Increased volume of the engine sound through the intakes.
- Added additional BOV sound emitting from the exhaust.
- Increased volume of exhaust when it is unloaded.
- Improved the start_bad sound.
- Added clutch-fan sound, 40% chance of turning on.
- A number of other minor tweaks.

v1.2
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- Various audio based improvements, volume balancing.
- Re-engineered the engine sounds (reduced engine ticking sound).

v1.1
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- Increased start/idle/stop/intake sound volume by a few dB's.
- Increased volume of the engine inside the cabin.
- Optimised the audio assets and compressed them (should help with those experiencing any problems with the sounds).
- Improved the intake sucking sound.
- Added another layer of turbo sounds.
- Added another layer of blow off sounds to compliment above.
- Increased the strength of the jake brake very slightly.
- Added support for Pinga 389 (untested, confirm?).

v1.0.1
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- Added other variation of K100E
- Fixed the Rudas KW900

v1.0 (inital release)
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- Release.