Alfredo

Performance exshaust

29 posts in this topic

My mistake. It's been a few years since I fixed my muffler. 

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It is illegal.  No cat should equate to less back pressure and a faster spooling turbo.  On a non remapped car I would not be overly concerned about going without.  With a remapped cdi a cat will help to minimize unburned fuel being deposited on the back of the car.

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