calais instrument cluster

[base308]

hi guys ive just put a calis instrument cluster in my exec and now it seems that everyone is passing me when im doing the speed limit it seems to be about 10 ks out do i need to get an adaptor for the speedo cable or something the dash was recond a couple of years ago

[detox_nath83]

should be ok man what about matching the traffic speed in various areas/different speeds and suss it out.
or drive next to a mate on the motorway and work it out..

[Verynice]

or borrow someones GPS and test it in real time

[base308]

cheers guys will give them both a try