i know both crower and skunk2 offer stage 2 upgrades for vtec engines that have stage 2 vtec lobes, and stock idle lobes. that way when you wanna go fast you rev it over 4400 (or whatever), and it flies, and when you just driving around town, its just like stock. stock idle, stock mileage. when i get some money i plan on getting these from skunk2 for my GSR.
this is the true beauty of VTEC