K&N filters
Need your opinion. I am at the FMCA rally at Indio and there is a vender selling K&N washable air filters for big diesel coaches, plus this includes installation of a Aero exhaust system. They cla...
Forum Discussion
Just a bunch of hogwash. I witnessed a fellow who had a dusted Cummins using one of these filters and while it was under warranty Cummins was not going to warranty it because of the air filter. A lot of ATV engines have been ruined by these air filters.How many construction and ag equipment use these filters which spend most of their life in the dust. I changed my air filter on my coach when the indicator was nearing the top and my performance improved with a stock air filter from Freightliner. With the price of an engine overhaul I wouldn't even think about it. Besides the performance increase is next to nothing when compared to a new stock air filter.;)
