First Service - new ECU tune - what does it do?

[Guffer]

Just had my R3 R Black in for it's first service. When the bloke was going through was had been done to the bike, one of the things he mentioned was a new tune had been uploaded to the ECU.

I asked him what changes the new tune made but he didn't seem to know. Anybody here know what it does? The engine doesn't feel any different.