Quote:
Originally Posted by Anthny2040
Ive been afraid of going to the dealer ever since i put test pipes on the car.
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Undo the heat shrouds on your stock cats and screw them onto the test pipes 
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2011 Mustang 5.0 | 3.55's | Lethal Performance off road H-Pipe | Magnaflow Muffler Delete | JLT CAI/Bama tuned 417whp/ 404 ft/lbs
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