Ford Mustang Forum - View Single Post - Roush Exhaust Differential
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post #5 of (permalink) Old 11-24-2015
crjackson2134
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I'm not sure of how the Roush exhaust is configured, but if you don't see a physical difference, you might want to check for a restriction such as a failing catalytic converter or a damaged pipe or resonator (if your vehicle even has them).


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