Help, I am trying to remove the ECM to clean and put dilectric grease on it and can't figure it out. I removed the two nuts from either side and nothing. The nut in the middle seems to be it but looks like you need a special torx socket. Any help on this would be greatly appreicated. I'm tired of going into limp mode everytime it rains.

 

Yes it is a kind of Torx fitting but with 5 points and a tamper proof pin.

You will need something like this
5SIDED SECURITY TORX. DRAPER 71394 | eBay