2003 Acura RSX Base (Auto) - Parts location
 

My 2003 Acura RSX Base (Auto) drives sluggish and I am thinking of cleaning Mass Airflow Sensor
and changing the Fuel Filter. I can't find it. Can you please guide me and if possible show on diagram?

Also, what else to do to make it run better. I already have changed O2 Sensors, Cat Converter, Spark Plugs and
High Tension Wires, Camshaft Adjusted, Put new Air filter.