What are the diameters of the inlet and outlet pipes to the muffler?

Asked by Jun 04, 2008 at 06:50 PM about the 2004 Ford Mustang GT Premium Convertible

Question type: General

1 Answer

15

They should be 3" in 3" out, but it depends on the muffler and how much backpressure is being created from the muffler. A straight through muffler should be a 3" in and out.

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