Hi all, is my first post. I just bought a 04 Mazda 3, with 10,000 miles for a deal and reason it was cheap was the car was originally sold in Canada. I have KPH instead of MPH, both are on the speedometer, but the MPH is so small it needs to be in MPH. I found a complete cluster used with 5k miles on it. Since car is under warranty for a few more years, does the cluster retain the miles or the cars computer. I didn't want to change out the cluster and find out now the car says it has 5k miles and the dealership voids all warranty on the car. Also if I change it out will it show Miles went instead of Kilometers. Or would I need the dealer to reprogram the computer..any info appreciated.