Oh jeez yea I heard other stories of those headers cracking, terrible. MBRP header apparently doesn’t change the sound much anyways but I like mine loud, gets muffled when you got your helmet on anyways lol , sweet I can’t wait to get it on and get some ice and snowI had a header (Aaen, I think) with a Schmidt Brothers muffler (mostly gutted stock muffler) and no Power Commander. It didn’t run bad, but I felt it was too loud for almost no improvement in speed or power. The header started to crack welds, so I went back to a stock header and customized a stainless Steed auto muffler which turned out to work very well without a Power Commander.