Hi there. I had a problem a month back with my micra jerking whilst driving. I took it to a garage to correct the problem. After doing a diagnostic on the car it came back as the MAF Sensor. The garage informed me that these were very exspensive £130 plus. He rang me back and told me he could get a universal one for £40 so he went ahead and fitted it. I picked up the car and all seemed good and i took it the petrol station filled the tank. Now i was gettin over 300 miles from a tank but i have noticed a flat spot it normally appears in 3rd 4th and 5th. I have only got 270 miles out off the tank since i replaced the sensor. So my question is is this due to the sensor and should i get a proper nissan one which should then rectify the flat spot problem and the fuel consumption.