I used a K&N for about 6,000 miles. I don't hate them but I personall won't use them. More power to those who do... After less than 2,000 miles of driving with a paper air filter I see visible particles of dust in the media that I can blow out. After 6,000 miles with the K&N (looked at it under a light) - I didn't see any dust. Got me a little worried so I switched back to paper air filters. I don't doubt that K&N are good - I just won't use them in my vehicles. My RPMs are 2,600 and engine load @ 40% during my 220 mile work trips. So K&N probably won't benefit me much as someone with a high performance engine or in a dusty racing environment. Never had problems with the MAF sensor though. My small 2.2L Ecotec probably doesn't suck as much air as your guys engines do.