i dislike the standard throttle response for track work in the dbw 06 sti, so

1/ will a reflash be able to change the voltage for sharper throttle response, or use some other method to do so?
or do i use a product like the one above. basically connects between pedal- throttle body

2/ has anybody used a throttle controller like the one above? thoughts?

3/ does anyone know if pedal to floor on the sti = 100% throttle open?
i know on 350z's and some honda's it's only 95% open at full pedal travel

cheers