[Jozef Schumann]

Thank you for the link N41EF. I searched and searched to no avail. The reason for my inquiry is I have access to a couple of different proms however, they're all 2000-onward, so I'm a bit perplexed as I cannot seem to find any definitive differences, i.e. all things being equal aside from model year.
This being the case, I can understand why some proms will not be suited to one ECU and not another - however, it leaves me speculating on why changing out the ECU itself to a later (single plug) version, thereby facilitating 3rd party proms would not be feasible.

J.S.