North East Forum Moderator
Rev C is not the same part as rev F, you can ONLY have either rev E or rev F.
Sounds like you've installed C which doesnt even have the capability of Trip Computer, which certainly wont support MFSW.
Also with the steering being stiff, if there arent any lights on the dash then the chances are that you also have an incomptable slipring.
With the rev E/F steering ECU you need a Type 2 slipring (rev C or rev D).
Being a 2005, you more than likely had at standard, a 1K0 steering ECU with a Type 1 slipring.
I dont know what slipring wound be comptable with the 8P0 rev C but at a guess I would say Type 2, as Type 1's were typically only for the 1K0 modules.