Wonder what happens when you slow your car with regard to biasing issues?
TCE is happy to report we have now added to the tool box- a dynamic distribution calculator to help you see how weight shift effects proposed brake changes.
http://www.tceperformanceproducts.com/dynamic_dist.html

Very nice. Unfortunetally, CG height isn't easy to get for most of us, and you can't do anything without it. But even guesstimating, I can see that I go from 65/35 to 80/20 under 0.9G braking! Good information for anyone messing with brake balance.

The longacre page will give you some means of estimating this as well.