You need to increase the flame of the kers on the car in 3D mode. Or add a trail of kers behind the car like in 2D mode. Otherwise it is difficult to see when the opponent turns on kers.
Do not do this.
It makes boost management more important in general. If you cannot tell that a car is "boosting", maybe you are too far away to boost to them without using too much boost. This is especially the case in the following and cockpit views.
