Trying to add backfire to my Automation exported car. Ive added afterfirecoeff-lines in the_engine.jbeam to the mainengine and turbocharger parts but might have done something wrong. Ive also added the 200bx (named Coupe in beaamng/content folder) _exhaust.jbeam file and added exhaust slots to the _engine.jbeam so that it pops up and can be chosen in the Parts list. It also generates sparks so i know its there. Still not getting backfire/afterfire though, anyone know if i missed something?