I have 2 mods on mine:
Carbon engine cover (reported to gain 10kw)
SAU Vic stickers (confirmed to add 30kw per sticker)
Nah, seriously, the above two are the only changes. Going to put some dump pipes on ultimately. My VII is supposed to be 205kw at the fly from factory.
Your brothers sounds a little low though as my mate had a VI in the UK which was knocking on 270bhp from factory.