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2009 Silverado Extra Cab Z71 4x4 Power Increase?

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You need to tune your truck. :thumbs:


A lot of us have our trucks tuned. And for the most part, we've gone with Blackbear




Start reading there. I can tell you it makes a noticeable difference in the throttle response of the truck. I don't see any fuel economy benefits, but that's not why I tuned mine either :rollin:

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