When I put in the new cluster I lost trip computer functionality since it seems it came from a lower spec car.
However the 850 OBD app just updated and now has a new feature that lets you enable the trip computer on clusters that didn't have it active.
Totally awesome feature. Decided to post this in case someone else has this same issue and has to replace the cluster with another one from a lower spec car or just want to enable the computer in general. (though the knob that controls it is probably required)