The digital ratio adapter is probably for you speedometer and odometer and nothing else. Of all the brakes conversions I've seen or heard of here you shouldn't have to do anything. The bigger brakes will only grab better lockin up the tires quicker and engaging the ABS quicker and more abruptly. KJ's Baer just about pulled the car off the road when he slammed on the brakes because they grabbed so well. I was picking my balls out of my throat after that rid with him.
-Andy