I have a 07' 335i with jb2 stage 1 pinout and DCI, and I have gotten the half engine light multiple times during WOT but have not logged any errors according to bmw.. Car is fine upon reset and you can't feel any reason for the car to go into half engine mode. Does this sound like this a vanos issue? I am asking because it doesn't run rough or shudder, just goes limp
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