under hard braking from what I understand. I had a conversation with a gentleman back at ZCon 2000 who had fabricated one for himself (along with many other neat mods, like a homemade water injection system and much more) and he made the argument that the brace really helped with pedal feel and allowed the driver to achieve more accurate modulation. I've been wondering how long it was going to be before someone finally came out with a simple brace. They have been making them in Japan for a while.