What can a tune do for you? Here's a happy boy. Firm, efficient, but comfortable shifts; a tighter "feel," and a company that delivers on its promises. I'm an old street racer from the 70's who is now the Principal of one of the largest high schools in Florida (who'd have thunk it?). You have to be a good judge of character to achieve a position like that. To Nelson--thanks. You delivered on your promises. To my students--the Silverado SS is now consistently in the 13's--even when the thermometer reads 90+. See you at Orlando Speedway Friday night, boys!