The Bosch DI-Motronic is very clever, but the OEM map is designed only for 98 RON motion lotion. If you put higher octane juice, such as the BP 106 Ultimate, it wont make any difference, as the ECU wont adapt to the higher octane. Of course, if the knock sensor detects detonation or pre-ignition due to lower than 98 RON, the ECU will retard the timing accordingly.
IMVHO, if you want to run race fuel or methanol, one of the best options would be a remap of the exisiting ECU with switchable maps - such as Revo with the SPS. If you want to use methanol, or ethanol on a regular basis, be very wary of going over 10% - the fuel system seals were never designed to cope with high alcohol content.
HTH.