Ambient temperature? What's the coolant temp when it finally runs well? How long does it take to achieve? You said MAF clean helped for a while so possible that it is defective? I would try unplugging and see if it runs smoother. Then you need to confirm to have proper fuel pressure. Maybe the pump can't output properly until it warms up. That's my best bet. You need 50psi at the fuel rail.


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)