black bear tune, i need some help

[mitchell1991]

Hey everyone. Im planing on buying long tubes soon and I was told I should tune it when I do that. I gave a 2003 Chevy silverado with the 5.3. I heard about about black bear tune. Where did I get on. I can't find them anywhere. Can someone help me out. Also what can I get out of them for power? Can I change tire size on them?

[Quinton23]

http://blackbearperformance.com/