I know that flowmaster mufflers break themselves in. At first, they sound a bit harsh and muffled, then sound nice and hollow with a slight rasp. I would think the rest of the exhaust system, if it's just tubing, would sound the same.
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Blueneonman - '95 5.0L Mustang GT Convertible | K&N Drop-in | FMS 9mm Wires | Hollow Cats | Flowmaster 2 Chambers | Subframes | 6-pt Rollcage | 14deg Timing | Coolest Neon Lighting on a Mustang EVER!
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