MAF sensor and MAP sensor in classic jetta 2011

I would like to know where the MAF sensor and the MAP sensor are in the 2.0 engine of a classic jetta since I have seen the MAF sensor is near air filter but my car does not have it. Also the MAP sensor to give them a cleaning since my car has caught the check Engine (P0420) and, after changing the catalyst, the two oxygen sensors and the spark plugs, they told me that you had to clean these sensors in case any is dirty. Thank you.