On Counting Cars tonight I saw Danny's bike what he calls coffin. Well on that bike it has a heavy breather air filter that faces up. Is that a special air filter or just a heavy breather turned up and what's every ones opinion on that?

http://www.countskustoms.com/choppers.html

 

A guy in here with the handle "Alain" has one similar to what you are describing. Maybe you could PM him to see if he can answer your questions.