Hi,
I have a 2009 ML 63 AMG with the 6.2L NA V8. Currently stock. I pulled the secondary charcoal air filters out of the two air boxes and am now getting MAF codes. Looks like this truck has dual widebands from the factory, so easy to just tune AFR correction to the MAF scales to compensate? Or am I just better off buying the ROW (Rest Of World) air boxes anyway and going that route (they do not have the charcoal air filters). I understand they supposedly flow more air anyway.