OBC questions.

[Christian H]

I know that this is an old subject to many of you and I have searched old posts to try and find the information that I require.
My car is a 99 poverty spec, no air con etc, I believe the obc can be activated by the PST2 to show outside temp only and then after installing a switch or stalk I could then scroll through all other options,my problem is that I do not have a sensor fitted in the front grill(is that where it is?) I have been told by my local Porsche specialist that he has activated obc's before but was a bit vague on the sensors position,he was quite willing to do the full job, but if it can be done I would rather have him just activate the obc and I fit switch wires etc myself(and save some cash!)
My question is,will the temp show after activation or is this hack not possible on my car ?

Thanks for your time.