I'm not one to lay in to other companies, I just want to be clear about that, but here's the thing about aftermarket MAFs:
Do you need one or do you not need one? The thing about the newer model Ford Mass Air Meters is that they are incredibly accurate. Very few aftermarket MAFs will compare to their ability to both be repeatable and accurate.
Most applications will never need a MAF upgrade at all (unless you are under a heavy forced induction setup, tons of mods etc..).
If you do not have the NEED for an aftermarket MAF, I recommend avoiding the whole things because you will run in to repeatability problems down the road as you add other bolt-ons to the car.
Like others have said here, you'd be better off spending your hard earned cash on a tuner like the inTune
than on something like this that just "fools" your car into thinking the airflow is different than stock.