N55: 2011 535i F10: Low Target Boost, no Error Codes

Hello Guys,


I have a problem with my car and couldn´t find a solution.
It started a few weeks ago on a long distance autobahn trip it felt like not having full power.
The next week again on the autobahn i was pretty sure that something was wrong.


Read the codes and it said the IAT-Sensor is faulty (jumped to -40°C often).


Bought a new one and installed a aluminium charge pipe.
No Error code but still no power.


Bought MHD to monitor and because I wanted it anyway.
Made a log completely stock (Without MHD installed).


2020-07-19 09_26_33 00000D07596401 Unknown.csv

I can only see that the boost target is to low (between 0,2 and 0,36 bar/ 3-5 psi)


I hope you can help me read the data and to find the error or faulty part.


I checked the boost solenoid: vacuum (-950mbar) is going in and when i apply voltage (~11V) vacuum goes out (-500mbar)
If I apply vaccum to the wastegate is moving. Thats what I could check from above so far.


Thanks in advance!


Jan

Attached Files

• 2020-07-19 09_26_33 00000D07596401 Unknown.csv (28.2 KB)