Funny, I been around this place a long time and knew that cleaning the MAF is a good idea; however I never did. After nearly 6 years of ownership and almost 49,000 miles this thread caught my eye and I decided to clean my MAF.
Went down to the local auto parts store and purchased a can of CRC MAF cleaner, set my back $7.00. I removed the air cleaner and the flexible rubber intake tube, this gives you and open view front and back. Sprayed the MAF and also the both ends of electrical connector.
I had no idle problems and was unaware of any loss of power
prior to cleaning. I was aware that my cranking time was longer than it once was and somewhere along the way I had lost 1-2 mpg mostly in city driving. After the cleaning I went for a test drive and waited for engine to get to operating temp. and tires warmed up. Roads today are bone dry and air temp is 78* hum. 88%.
First impressions are that throttle response is better; I also understand how worthless that statement can be. The placebo effect can be very tempting and I try my best to find objective ways to measure what is very difficult to measure. Something with my car that I feel is as objective
as possible in this case is: at what speed the rear end breaks loose when I punch it. My criteria is always the same A/C off, O/D off, dry pavement, same road, same lane, same segment of road.
At 35 mph punch: tires broke loose. rear end fishtailed and within 2 seconds I regained traction and took off.
At 30 mph punch: tires broke loose. no fishtailing just very little forward progress after about 3-4 seconds tires catch and accelaration begans. The relevance of the prior statements is: my car could not break the rears free recently from 30-35 mph.
My tires don't squeal, you just hear a swishing sound and from there you go to smoke if you don't let up, all very quiet actually. Anyway all this writing is because I have nothing better to do.

Conclusion: It was worth the $7.00
PS: If the gas mileage and long crank time improves I will report back.