With over two million sets of headers produced, you could say Hedman Hedders of Hedman Performance Group knows a thing or two about building a reputable exhaust manifold for your American hot rod, and ...

Once upon a time I had this idea: While strolling the aisles at SEMA last November-the largest automotive aftermarket trade show in the universe-amongst all the glitz that is Vegas, I spied a set of ...

One area of engine science that shows positive returns is the exhaust system, particularly from the cylinder head to the muffler. It's been proven over and over again that headers add big power, so ...