Uploaded September 2022 | Updated September 2026, 7 hours ago

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Version 3.0 Changelog:
-Rebuilt the entire mod
-Used max volume regulation to reduce chance of sound flickering and prevent too loud sound
(Highly recommended to put engine, exhaust, turbo volume slider to max)
-Removed half of the engine specifications due to misinformation with small cam cummins
-Included 444HP engine and 605HP tuned
-Improved exhaust distortions with stacks simulation for more realistic feeling
-Included idle jake brake system
-Included Customizable Additional Supported Trucks (CAST)
If you don't know what CAST is :
steamcommunity.com/workshop/filedetails/discussion/665335536/3156453942274154402

Quick tutorial on how to use CAST
1. Goto def/vehicle/truck/
2. Rename one of zcustom_xx into truck def name you want

How to use idle jake brake:
1. hold light horn button (J button) for 1 second, then release
2. tap light horn button once again, and idle jake brake should be engaged
3. Repeat the same process to turn off

Note: idle jake brake system doesn't compatible with mods that contain interior switches sound
(Sound fixes pack is exceptional but keep piority under my mod)

Download link:
forum.scssoft.com/viewtopic.php?t=303342

TruckyMods:
truckymods.io/american-truck-simulator/sound/cummins-ntc-big-cam-straight-pipe-sound

Reference:
youtube.com/watch?v=q9RaaBUYKvo

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