Overboost

pysical

Sergeant
Jun 16, 2017
348
75
0
Ride
2009 335xi E90
This is a N55 car but that section doesn't get much views and the same issue applies to N54. But got a friend who is have overboost issue since he took Jb4 off.

2C56 - Charging pressure control, plausibility Pressure too high.
2C58 - Charging pressure control: Switch-off as consequence

Here is 3rd gear manual mode
https://datazap.me/u/pysical/dan-manual?log=0&data=3-11

I am going to take a look at the boost solenoid and vacuum lines but any other possible things to check?
 

R.G.

Lieutenant
Nov 17, 2016
669
325
0
Henderson, NV
Ride
E92 335, F10 M5
This is a N55 car but that section doesn't get much views and the same issue applies to N54. But got a friend who is have overboost issue since he took Jb4 off.

2C56 - Charging pressure control, plausibility Pressure too high.
2C58 - Charging pressure control: Switch-off as consequence

Here is 3rd gear manual mode
https://datazap.me/u/pysical/dan-manual?log=0&data=3-11

I am going to take a look at the boost solenoid and vacuum lines but any other possible things to check?

That's a strange looking log. 21psi and throttle position sticks at 22% with accel position at 100% for 1k RPM

Waste gate seems like it's stuck closed
 

doublespaces

General of the Army
Oct 18, 2016
8,943
4,150
0
AZ
Ride
2009 E93 335i
Thank you for following up. A Q&A section will be rolling out soon. You'll be able to vote on answers etc.