New tune -> limp mode (2C58,2C86,2C7F)

[admd14]

Just got the MHD super license for my 2012 135. Car had a tune from previous owner but did not have login details.

After flashing stg2, car went into limp mode and kicked out three codes: 2C58,2C86,2C7F. Car is not boosting at all. I tried flashing to stg1 and to stock but same codes appear.

From searching the forums it seems like the boost solenoid is usually the culprit when getting these codes but I just found it odd that the failure would happen right after flashing the ECU. Any other thoughts?

[admd14]

Originally Posted by admd14

Just got the MHD super license for my 2012 135. Car had a tune from previous owner but did not have login details.

After flashing stg2, car went into limp mode and kicked out three codes: 2C58,2C86,2C7F. Car is not boosting at all. I tried flashing to stg1 and to stock but same codes appear.

From searching the forums it seems like the boost solenoid is usually the culprit when getting these codes but I just found it odd that the failure would happen right after flashing the ECU. Any other thoughts?

Attachment 3133002

Replaced the boost solenoid…no change. The chargepipe is not loose/disconnected. Any other advice?

[SHK_e82]

I’ve seen this issue before with my cousins 335i. I never had the issue on my 135i because I went only stage 1. I would suggest replacing the boost solenoids and cleaning the vanos solenoids. This problem could have something to do with your valve cover and running too much boost on a higher tune like that that the pcv valve system can handle. The other thing I’d suggest would be getting a walnut blast to clean out any carbon buildup in the intake manifold and getting an oil catch can.