This is topic Exhaust diameter question in forum Tech Talk at Northern California Ford Owners  .


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Posted by Xplosive22 (Member # 8210) on :
 
So I've got a 2007 Mustang GT and I plan on putting headers and an x-pipe on. My only concern is with the cat-back piping. I originally wanted the Magnapack exhaust for the sound, but it seems like it is only sold with 3" piping. Would that size increase from the x-pipe back be a problem for my backpressure? Would it be wiser to do an axle-back instead?

There is no sense in wasting money on 3" piping when I can just buy the mufflers, unless there will be gains. I like more torque so I'm afraid of it being too free-flowing.
 

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