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Muffler ON/OFF

7.8K views 26 replies 12 participants last post by  kevinatfms  
you know I recently ran my car with just the manifold/cat on it, not piping hooked up and it was more quiet then I thought it was going to be. Idle just a touch of a rumble and flooring it was not to bed though that was at low rpms and in the mechanics parking lot where I was working on it....I was still pretty surprised.