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Newbie on Performance chips
I want to upgrade to a super chip. But when reading this forum, it seems there's more to to this than meets the eye. can someone give a more in depth idea on whats needed and is it worth the extra cost. I have a 2012 3500 Heavy duty Cummins and would definitely like to get better Fuel Mileage...- seajinx
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- Forum: 6.7 Common Rail
