Jap Mazdaspeed 6 - Trip Computer

Hey Guys, sorry if this has been covered in the past, i did search through the forums but couldn't find anything. Is it possible to enable a L per 100km's type display on a 2005 Japanese MS6 ? I found some very old posts on another forum from 2007 but nobody seemed to be able to figure it out, wondering if the experts on here have ever had any luck in enabling this feature or even know if its possible with this particular model? Mine is not a luxury edition, it has the black cloth interior, climate control and multi function steering wheel (sports edition???)

Thanks in advance!