After I installed two new police cars, which required me to edit the cavarations and vehicle meta, there isn't any engine or siren sound attached to that vehicle when I drive them in the game. Since I'm not new installing cars or other mods, I went back to look at both of the files that I edited and everything seemed to check out. So could some one tell me exactly what controls the audio attached to the car. For example is it the cavarations I need to fix or the vehicles meta.
thanks
I found the solution