Reading the HD website on the SE Heavy Breather air intake it states " this unique air cleaner system offers improved performance and air flow when compared to the stock or Screamin' EagleŽ High Flow air cleaner." So my question is, I currently have the SE setup that utilizes the stock housing I believe it is called "High Flow" so if I were to install the Heavy Breather what type of gains if any would I see when it pertains to performance, would it be enough to warrant the $300.00 price tag?

 

I don't think you'd see any gain in HP. Rather, you may run lean instead. Your SE a/c should already flow an adequate amount of air if all you want is a stage 1 setup. In my opinion the heavy breather is just for looks. If I'm wrong I'm sure others will chime in.

-Beer