Quote:
Originally Posted by jmg
Good points. I wonder though, if the HUD takes cluster data, or direct data from the EMS. If it's from the EMS, does the IO hardware have the data refresh rate for real-time RPM input, interpretation AND display that the cluster does. Is there a choke point there? If it's a the OBD or EMS level, even more so since the data will be raw. I know even certain OBD readers are hardware limited for real time data streams.
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My 2019 I8 has the RPM in the HUD as do/did all my other BMW's (M cars). Why would you expect BMW to use substantially different hardware and IO methods across its product line?
I expect the only difference is merely whatever has been facilitated via different versions of the HUD software/firmware.