I recently cleaned my maf sensor wires... they are not so fragile as someone may think. I sprayed them with electrical cleaner and brushed with a soft toothbrush, as there were some brownish deposits that would not come out with cleaner alone. I played with one maf at the junkyard just to see how sturdy it is... these are pretty tough and flexible, although I would not press too much, there is not too much worry for cleaning them. I unscrewed the safety torx and pulled the holder out.