I know it was a long time ago I posted here, but I think its better to continue here than starting a new topic.
The reason why I post here is because after having a failed attempt at mapping Mario Kart Wii in the way I intended to do [First post], I have found a new way.
But unfortunately I still don't have my new computer to work properly. [Gonna buy it in about 2 months when I have the money for it]
However here is the result:
[And yes I know this is Baby Park from Mario Kart: Double Dash!! but the tracks work the same as in MKWii - therefore I could also map MK:DD!!
]