Quote:
Originally Posted by mr_robot
I wish I knew how to update my dme myself as I swear it’s a software issue more than my Intermediate levers due to it’s inconsistency. Every time I try to read a how to or video it just glosses over me lol
Sometimes my cel flashes after 2 min of driving when the cold start has already switched from max to min lift.
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Check out a guy on YouTube called bmw doctor. He's got a lot of videos on programming. He talks a lot about the rough idle issue on the N52. He used to work at a dealer so he knows all the secrets. The N 52 has basically the same valvetronic system. He says the only way to fix it is to get the new updated vanos solenoids and then update the firmware. Make sure to use the plugs with four electrodes and that will fix it permanently. I have a feeling the fix is the same here. He says that the original vanos solenoids are not designed to work with the new updated software and they will fail. Also if you're not using the right plugs it will cause your coil packs to fail.
Just search his channel for rough idle, he's got a few videos on the topic.