On my new '91 Talon TSi AWD, I have a '90 gauge cluster with the speedometer ending in 5s, not 0s. I was wondering if the mph would be correct, or 5 mph off.
I was also wondering: if that is the case, will a '90 ECU correct it? The car has a '90 ECU. Everything else runs fine, but I was wondering if there are any negative effects of running a '90 ECU rather than the '91.
(I searched by the way...)