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Reply To: Exhaust system for Duramax

February 7, 2017 at 6:35 pm #151718
Goahead
Participant

Yes there may be a significant change in performance. Some would install a Superchip in order to compensate the air flow changes and it works. I believe http://4wheelonline.com/ is selling a bundle ( exhaust and chip) for Duramax you may want to check it out.

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