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Discussion Starter · #1 · (Edited)
Have a 2010 Silverado 1500 Z71, 5.3L. I am putting on some 33" inch tires with Rough Country 2" Spacer this week. I also tow a Mastercraft X-Star wakeboarding boat. My truck got a "horrible" 7.2 mpg on my last trip out of town.

What programmers do you guys recommend with the larger tire and towing of my boat/16ft trailer with atvs?
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