MAF sensor cleaning is easy. Unplug it, remove it, use a MAF spray cleaner to the inside of it...you should be able to see a small screen inside it, just spray it down good. Any dirt or debri on that little wire in there will cause it to read incorrectly. Just the spray, dont try to wipe it off or use a brush to clean it. Bolt it all back together and see if you have improvement.