Is there any documentation anywhere as to which controls can be mapped for each car? Fuel mixture, ABS, TC, boost etc. Looking mainly for the GT3, GTE and LMP.
Unfortunately, I don't think there is. As far as the paid DLC cars, if it has items such as those that are adjustable in setup then they're adjustable on the track. e.g. mixture is adjustable on all the cars. ABS is adjustable on the GT3 cars. TC is adjustable on the most of those except the LMP3. I don't think any of those cars has adjustable boost. And all of them should have adjustable brake bias.