So even if you press the brakes hard while parked in the garage, you will still get 1000 front/600 rear (say).
If you increase the braking force of the front brakes you then need to increase the pressure to the rear slighty (but not more than the front) so that they have correct ratio of braking force??
Since less pressure is needed to create the same force on the front, more pressure is going to be needed to create the same force on the back, assuming the back brakes are standard.
so instead of 1000/600psi you get 900/700psi (eg)
Also this means that if you upgrade the brakes u effectively reduce the amount of pressure required to creat the same stopping force, thus leaving more pressure in reserve for even more braking force. so instead of 900/700psi you can end up with 450/350psi (exaggerated i know but gets my point across, hopefully)
And is this the point in adjustable brake bias compensators?
Apologies for the 20 questions, just wud be good to get a grasp of this