Is there something like this for the Sunburst? If not, it would be cool for someone to make it, if nobody wants to make it, then I could, so this is where the question comes, how do I mod it?
He could copy original sunburst_engine.jbeam and paste it in his mod folder then just edit it, thats how I edit engine sounds sometimes.
I'm just gonna give you a tutorial @Mr. Chernobyl. So, first, you want to get the sunburst_engine.jbeam. It's located in your game files/content/vehicles/sunburst.zip. Copy it and go to your userfolder/mods. Create a new folder, the name is irrelevant for now. Add another folder and call it 'vehicles'. In that folder add another one and call it 'sunburst'. Paste your jbeam there. Now pack the vehicles folder into a zip (NOT THE FIRST FOLDER). Name that zip whatever you want and move it so it's directly inside 'mods'. Then open your game, click on the 'repository' section, and select 'mods' in the upper bar. Now find your zip, click on it and then click the 'unpack' button. The game unpacks the zip to the 'unpacked' folder in 'mods' You can now open your game, select the sunburst and edit the jbeam. You can check what your edits did by pressing CTRL+R. Hope this helps!