Uploaded April 2022 | Updated September 2026, 1 day ago

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Version 3.0 Changelog:
-Rebuilt the ENTIRE mod
-Separated engines and sounds into 4 variants:
ISX CM870 400, 450, 500, 525, 550, 565, 600
ISx EGR 400, 450, 500, 525, 550, 565, 600
ISX CM2250 450, 500, 550, 600
X15 400, 450, 500, 525, 565, 605
-Included idle jake brake system
-Included Improved Customizable Additional Supported Trucks (CAST) in the mod
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
and you should good to go

How to use idle jake brake:
1. Hold light horn button for 1 second and release (release in 1.5 seconds)
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 will not work with some kind of interior sound mods

Download link:
forum.scssoft.com/viewtopic.php?t=303212

timestamps:
0:00 ISX CM870
13:18 ISX CM870 EGR
28:48 ISX CM2250
44:41 X15