trying to understand braking systems. tell me if im on the right track, gleaned some info off of the stoptech website Options

[enderswift]

read this article : http://www.stoptech.com/tech_info/wp_rearb..._upgrades.shtml

it explains why balance always prevails. It also highlights a mistake that alot of people are making. Brakes dont do the stopping your tires do. Brakes only convert the rotational energy of the wheel into heat. So increasing the heat dissipating and storing potential of a brake system will yield more consistent and resilient brakes. a common upgrade path is to increase the diameter of their rotors. While this will increase thermal capacity, the downside is that larger rotors will ruin the brake bias, thus increasing stopping distance. I could go on...

long story short, in my opinion, big brake upgrades for our cars aren't really a good idea. Instead, installing high boiling point fluid, slotted rotors, and high temp pads will reduce brake fade (letting you beat on your car for longer) while maintaining oem brake bias (which means ur car will be predictable and easy to control). If you mess with brake bias by changing piston/rotor diameter, you will either induce excessive understeer, or oversteer ( you really have to f up with the setup to cause oversteer in a celica).

[enderswift]

please tell me more about brake proportioning valves.
where are they located?
do they interfere this abs systems?
what exactly is the best bias between the front and rear?
would such a valve be able to offset the the effects of multiple pistons/larger pistons/larger rotors?

question overload. info is appreciated