[Qmulus]

If you have the 996 cluster, you do not need to enable the voltage and oil pressure gauges, as they already are. While the circuit boards themselves are the same between 986 and 996, there are different components and different processor code. You would need a complete 996 cluster for the parts, sooo why "convert" a 986 cluster? Even if I had a damaged 996 cluster, I would just use the the 986 cluster for parts to fix it.

For what it is worth. You can do some interesting things, like enabling the MAP (manifold absolute pressure) display as used on the 996TT, on the 986 "dot matrix" clusters. I haven't found any use for that, and can't confirm yet that the parts are on the board to actually read the voltage from the MAP sensor, but it is probably possible. It is cool to cycle through the OBC menus and see it though.

Bottom line, if you want 996 gauges, just get a 996 cluster.