Superchips Flashpaq Or Bully Dog?

By Z71Silverado
April 3, 2010 in 1999-2013 Silverado 1500 & Sierra 1500

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Z71Silverado

Posted April 3, 2010

Which tuner is better? i want one but don't know which one to get. please share your experiences with them. i have a 2004 silverado with a 5.3 liter. i am getting about 13 miles to the gallon and would like better fuel economy. i also wouldn't mind a little extra horsepower.

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