So far for virtually everyone who has changed their tire size to a non OEM size (larger/smaller) and tried to correct their speedo/odometer calibration w/ a DiabloSport tuner, have triggered the ABS light! Some have not been able to reset that ABS light even after a trip to the dealer!
Even for forum members running custom Hemifever tunes. As far as I know DiabloSport is well aware of the problem but has not been able to fix it, or they just don't really care!
If you do a search this has been discussed many times on this forum with no action from DiabloSport at all.