1 of the most common causes of engine failure, in the stock VW Beetle, and Karmman Ghia, is exhaust valve stem crystallization of the metal. Shown in the picture below is the custom fabricated stainless steel QUAD Ideas cat-back exhaust method vs. the Audi TT (8J) factory stock original a single. If you would like some more help, please feel … Continue reading Muffler Repair Ann Arbor