You really can't/shouldn't adjust your MAF settings. There is a shitty way to do it with a capacitor, but I'm not telling you how. You can clean it though. You should be able to find a can of MAF/electrical component cleaner at your local auto parts store. It's a simple spray the hell out of it, let it dry, and done.
There are a number of other things that can be causing your problem. Consider spark plugs, o2 sensors, ect...