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Old 03-17-2020, 10:11 PM   #3
solidONE
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What you are hearing is likely the mechanical noises from the engine echoing in your new catless exhaust. If you look at the differences in construction from your Tomei vs your stock pipes it will be obvious. Check the alignment of the exhaust and the torque on every single bolt and nut from the engine header to the catback and tighten to be sure.

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