Thread: Anyone know how much horsepower just a Magnaflow exhuast will add?
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Old 06-25-2009, 03:23 PM
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Mike-in-Orange
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Default Re: Anyone know how much horsepower just a Magnaflow exhuast will add?
According to my highly scientific butt-dyno I gained an honest 1.382 HP and 0.994 lb-ft of torque.

Gas mileage has suffered, however, because it sounds bloody fantastic running up through the gears!
 
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