Multiple Errors and misfire

I have errors coming up in my ECU Master Black. Up until recently it has been solid. This is a pretty new build, all new looms etc.

The error tonight was MAP and DBW and came along with terrible misfiring.

Last week I drove the car and I got CLT, IAT, MAP, and DBW. The CLT and IAT maximum values was like 125C or something insane.

Any idea on what would cause this? The MAP error is interesting - given that the sensor is inside the ECU.

Cheers
Pete