I replaced my engine air filter with the K&N filter because its such a ginormous PITA to replace it in the Thor Vegas 24.1, so I wanted to do this procedure less frequently. The K&N filter can be used much longer than a standard paper filter, and my time is worth a lot more than the difference in price. I have no clue if i get better mileage, its hard to tell between bad (9.5 mpg) and really bad (8.5 mpg).
__________________
|