Just putting this vid out there to see if someone else has encountered the same issue as me? Or might have some insight to help? I have a JDM cluster I ...
A bit late with the info, but for anyone else who experiences similar
problems, RPM gauge needs to be calibrated, take your cluster apart (Google
how for your cluster) and there should be two adjustment screws behind the
tach module, its trial and error, and you'll need an ECU reading of the
true RPM. If you're not confident with it, take it to an auto electrician
or mechanic, not my fault if your cluster breaks or your kittens die in the
procedure. Also the SiR cluster in the vid needs to be adapted if your car
has a dimmer switch, otherwise it'll be really dull at night.