Is there any way of increasing an individual car volume? Most of the cars are perfect, I find the Radical, Judd version too quiet, where I use Crewchief as well it's not as simple as just turning up the In game volume
No ...but, hi, A trick By taking the problem upside down : With the audio mixer of windows you can increase the audio level of crew chief by creating an audio delta with the level of r3e (adapt the delta wanted). So the audio level of crew chief will be always stronger, if the audio level of crew chief doesn't suit you you can set it with the assigned keys.
So after miche34 suggestion I noticed that within Crewcheif a key can be assigned to speech volume up and volume down, this is a workaround that works for me I play n VR so I use a Belkin N52te speed pad for a few other in game functions and is simple to put my hand on while playing and I just added keys for this function.