I've got JoePMBC(.com)'s manual boost controller. Car's a lot more responsive now, as I keep it at around 10 to 12psi daily on 93 pump gas. My tires have about had it anyway, so I'm trying to play nice. However, lately, due to the occasional sprinkling, it's constantly losing traction when I put my foot in it. Can't wait to get new tires and really see how it does once I get some grip.