To use with MultiSlot (not required but recommended), download:
https://www.beamng.com/resources/general-modslot-generator-multimod.31265/
Also fixed the Semi after update and the Pickup - should also ensure future proofing better
Experimental Backfire/Afterfire Mod (now customizable and MOD COMPATIBLE) 0.0053
adds some flamey action to every stock beamng vehicle (and most mods with 0.0050 update)