Today I installed my new-to-me Rogue Engineering El Diablo :evil: muffler. The majority of the install went super smooth, which I'll attribute to the car staying in California, and a garage, for the entirety of it's life. There was one issue I couldn't figure out though. The brackets that bring...

Can you really adjust the valve opening and closing? im looking into getting this for my M. and i need answers! :woot: