DIY Network

Host Kevin Tetz installs a new performance carburetor that will allow the engine to breathe better and produce more power. Then he drains the oil tank and installs a magnetic plug, which will attract and filter out metal particles in the oiling system. Harley-Davidson expert William "Dunk" Dunkelberger joins our host to show him an old Harley trick -- running the oil through the engine guard tube, which cools the oil and prevents the engine from over-heating. They then tap into the engine guard and complete the process by installing stainless steel oil lines.