We installed a loud dual 3" exhaust on the audi a4 b8.5. It has 4" tips and has no resonators or cats. The valves are open in this video since we didn't get the part to get it setup yet. Both tips are on now and fit good without the diffuser installed until a new dual cutout diffuser is put on. It is a very nice exhaust setup and came with all new hardware and gaskets. It can sound like a insane straight piped exhaust or mellow street exhaust with a button.
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