Next, we installed a cold-air intake from AEM with one of the company's "dry" filter elements. The filter does not get oiled, so there is no chance of fouling your sensors. We ditched the factory 55-gallon muffler and installed a MagnaFlow stainless muffler and a SuperTrapp baffled tailpipe. The SuperTrapp is for spark-arresting duty. I get into some remote spots and the last thing I want is any exhaust sparks that may cause a fire.