This weekend I took a step back and started from scratch.

Firstly I bought a proper OBDII app for my phone and then I took it for a long drive while I monitored the sensors.

While the car was cold all the sensors reported correctly, when the car was at temperature I noticed that the MAP sensor was not changing much and the long term fuel trim was moving from -1.3 to 1.7. When I got home and stop the long term was back to -1.3.

When the long term fuel trim was 1.7 I could see that the amount of fuel being used was way above normal.

So I waited for the engine to cool down and pull the MAP sensor again. It looked clean from the outside but I sprayed break cleaner into it and by magic a piece of something black came out. I put it back again and went for a test drive and problem solved.

Just show how a intermittent MAP sensor can mess everything around and it is difficult to diagnose without a proper logging system.