MAF Sensor Upgrade

[ccmoore11]

Has anybody seen much improvement off of an upgraded MAF Sensor such as the Granatelli for 5.0L V8 Explorers? They claim like a good 10-15 rear wheel horsepower increase but Ive heard its not noticeable and not that much? Also on the Granatelli website they are like 500 something dollars and on other sites that sell it, its like 300 something. There are two options, the MAF standard or one with cold air tuning and they are the same price but they seem to be sold seperately only on the Granatelli site and on other sites its all just one sensor you buy to upgrade. Can you guys add some input on this?

 

[kschaper]

I talked to a tuner about doing the same thing. He said the stock maf is good for about 300hp. beyond that you will need a new one. I believe this tuner cause he used to have an x and had it up to 129 mph after he tuned it. Bottom line, don't waste your money or buy a chip if you haven't already.