I had the same question when I started flying about a year ago. I got the same response, most seemed to think that it reduces power and is not needed.

I decided to try one and I dont think it reduced the power but I did have to change the settings a bit.
I did not run it for long because it would sometimes get bumped off and it was a pain in the you know what to put on.

Well right after I took it off I came in for a not so great landing, the wind picked up and pushed me off to the side of the runway. I ended up putting the nose in a nice big dirt clod on the far side of the runway.

Filter would have saved the clean up of the carb, but on average I really think its more of a hassle than anything else.

I still have it in my pit box but never use it.

Like previous post, If you fly in a dusty field it might be a good idea, other than that its just more to deal with.


Dbow