Glad to be of help. Don't replace a part without testing it to be sure it's bad. The MAF sensor is not cheap! The same symptoms could be caused by something else.
Symptoms include Lack of Power. It's as if there were a timelag between when the accelerator pedal is depressed and engine reaction. Thesemay also include low gas mileage, shuddering, stalling, knocking or pinging.Other common automobile problems can also cause these symptoms, so they don'tspecifically indicate MAF failure.Here are some videos for testing and cleaning, as well as links listing the symptoms.
Testing MAF sensorvideoshttp://www.youtube.com/watch?v=NRIDW0xRmYo
Cleaning MAF Sensorvideo