2006 ML350 misfire on all cylinders- corrects w/ MAF disconnected
 

Codes for random misfire in all cylinders. Idling very poorly, dying at times. Disconnected air flow meter and mis went away. Cleared codes and only codes coming up are for maf. Drove the car one mile and then it went into limp mode. Cleared code and drove back home ok. Today I replaced the maf with new Bosch unit and same symptoms exist. What is my next step?

I figured it out. Intake manifold is broken

chiwanga, please explain what "intake manifold is broken" means and how that happened.