Magnaflow 12589 muffler
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Joined: Jan 2011
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From: San Francisco,Ca.
Magnaflow 12589 muffler
Had a Magnaflow 12589 muffler installed on 2011 Ram.3 inch single in and out.Come factory with 3 pipe.The twin cats are 1 foot behind the exhaust manifolds on each side.Has the o2 senors on each side.The shop said i could convert to true dual exhaust.Maybe later.Sounds a little louder over stock at idle.22 inch long muffler.Left the resonator in place.$200.00 installed.What a difference over stock.1700 miles on truck.The difference between the 12589 and 12579 is the 89 is center offset and the 79 is center to center.