Keep in mind that this is a 4 wheel Disc brake system.
Disc brake calipers will open up to clear a moving rotor when the brake pedal is not depressed.
If you have a warped rotor, the calipers will open up more than 'normal' to clear the warped rotor. This will drive a lower pedal height because it takes more pedal to close the gap between the pad and the rotor.
Check the run-out on your rotors.
I replaced mine on my 2007 and it raised the pedal height.
Still too low in my thoughts but at least it was higher with the warped rotors.
