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N54: N54 bad piston rings

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Hello
I have a 335i 2007 (n54) FOB tuned with mhd Stage 2 + .
I had no power on low rpm and when i did a log i had many cyl correction especially on low rpm.
And lately my car was smoking too bad.. so i decided to change the turbos (because i thought that turbos are the cause of smoking), and after that nothing happened and the car still smoking. so it seems like i have bad piston rings and maybe bad valve stem.
My question is: Do you think mixing fuel with the oil (because of the bad piston rings) will cause knocking and bad cyl timing and power loss at low rpm?? Thank you very much in advance

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