Changing my oil today, and the filter housing is stuck tight. I must have used the wrong setting on my torque wrench last time. In trying to turn it with the Porsche tool, I am in danger of stripping the housing.

Any ideas on how to loosen it?

 

If you do round it, a strap wrench still works. Spray some wd40 around where it connects to the engine. Replace the housing once you get it off.