Posted 6/13/2014 06:01 (#3916480 - in reply to #3916441) Subject: RE: Turbo II air per cleaner
south central kansas
they help quiet a bit. Like previous poster says the exhaust ones work a little better but I have also heard stories of something going wrong with them and sucking exhaust in your engine. We have lots of dust and usually I don't have to clean air filter till I change oil.