I think you must have the sound before add it to any engine you want by rename it exactly like they are named in sounds folder.
But if someone know how to add it i want to know too ^^
I have a question, in BB93's SLRR, it is possible to have engine parts in catalog? i've got every engine kits but their parts aren't in catalog sections. like the last version of devis v8 rescripted, i can't add somes turbos or change admissions because they dosn't appear )= thanks.
