I noticed around 3k there was a small thud every now and then, lasted about 1k before it went away, guess it takes a bit to break er' in.
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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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