Even if you cant tell whether the odometer has been wound back, you can generally tell if the cluster has been tampered with.
People generally rip out the cluter for these reasons.
- rice it up with carbon/chrome surrounds and garnish
- upgrade it to a Nismo unit
- plug a console in to change the numbers
When you take out a cluster, look at the screws and screw holes. Have they been removed before? Once you remove all the screws, pull out the cluster and take a good look at the clips that connect the loom to back of the cluster. These are very tight and needs a flathead screwdriver to separate it. If the clips looks mangled up, you know someone has pulled out the cluster in the past.