I reset my codes on the 2000 ml 320 today, and the CE light came on again after 5 minutes. The MB dealership told me that the maf sensor is bad, but there is no difference between my old one and this new one, the still runs like crap, it wont accelerate, it has no power. Did anyone have any problems with their Cats, I think that they don't have a good flow and it sounds like the exhaust is leaking, right after the manifold but before the cat. It is leaking on the exhaust gasket i think. Please, i anyone had the same problem or any suggestions, i would appriciate it. thanks a lot.