Don't use just water. Use the cleaner and recharge stuff. Too important a component.
#1
I have a K&N drop in air filter. I have seen special cleaner advertised to 'recharge' these filters. http://www.ecstuning.com/Volkswagen-.../K&N/ES517994/ are these types of cleaners necessary? Can you just use water and let it dry out well? This is my first performance air filter that is supposed to be 'lifetime'
#2
Don't use just water. Use the cleaner and recharge stuff. Too important a component.
#3