I've been digging all day online and staring at a dump of the data stream from the ECU to the instrument cluster trying to figure out the format.
Is there any information anywhere that may have clues?
As far as I know the GenII ecu sends 8 bytes, but I don't think the GenI does since the GenII appears to send more data to the cluster.
Here is the dump I have. Powered up ECU, waited 5 seconds, then started, and revved a couple times, then shut down.
Attaching image as I cannot get the formatting right.