Beat up, Dented, and "clearanced" Headers.....

So just finished watching an episode of Engine Masters on Motortrend. They dyno tested a motor at different states of the headers being dented. Started off mild....and progressively got more extreme. ZERO changes in TQ and HP until they basically smashed em nearly flat....and lost only 8HP and Zero TQ. LOL. Who'd of thought?? I feel better about my massaged headers now.