While I agree brake bias does help turn the rear end around. If you can't seem to do it via chassis set up/ suspension or diff methods but if its as good as all the techno conversion people and others who have systems with it claim, why aren't very many to any top 20 drivers using it and manufactures other than HPI even touching it. You'd think "performance above all" manufacturers like x-ray, serpent, mugen losi and kyosho might have one of their cars with this feature, but none. why?

And I've heard cost, but if HPI can put it in thier buggy and it still is cheaper than all the rest it must not be that.