Originally Posted by Osiris

I'm fortunate enough to have some reputable shops near me, but Z1 is very good at tuning the Z's. Friend of mine that lives close to me took his there. I wouldn't hesitate to take mine there if i didn't have any other options here. Nothing worse than a bad tune from an unreputable shop, or a shop that has never worked on a Z, or a shop that has never worked with the Stillen kit. Z1 has, and you can ask any of the Atlanta Z guys, they'll swear by them.