Motor Trend – Testing Power Loss From Dents On Exhaust Headers – Video

If you’ve ever installed a set of high-performance exhaust headers, then you’ve probably bashed those exhaust tubes with a hammer to get them to clear everything in the chassis of the car. It’s a super common problem, but people often worry about how much horsepower they are killing by dinging and denting those headers. This episode of Engine Masters, presented by Amsoil, is here to answer that for you, testing various levels of destruction of a set of Hooker headers on a 550-horsepower, 400ci small-block Chevy from Blueprint Engines. The result is shocking.