2 questions: I ruined a brand new air filter in 3 months with mud/dirt. What do you all use as an air filter so that it doesn't need to be replaced every couple months from clogging up with dirt/mud? Also, what is the best method to clean my TBI injectors? I have heard some people just soak them overnight in gasoline and others soak them in a bowl of (in tank) injector cleaner. Any suggestions?