I think the only way to change the parameters on your cluster (or front panel, how we called it here in Russia) is re-program it with the special device.
I already did it.
I called a guy, he went very quick, took out my front panel, then went to his own car and connect it to the some device. He didn't showed me what it was because it's his money and business and he don't want that anyone knows how to do this.
But theoretically everything is clear for me, so it's only technical question - what technical environment you need and where to buy this. Of course you don't want to buy this equipment only for yourself, it will be very expensive. The one good reason to buy this things it's only if you want to do business with this, or you have a loooot of friends who need this too
So it's more easy to call guy like this and pay him some money and forget about this.
So it took about 10 minutes. He even asked me what mileage I want he put on the odometer the same as it was, or less? Everything is possible
It is not very expensive (comparative), about $70, so if you don't have this in your hometown you can take out your cluster and bring it here next time when you will be in Moscow.