I have a friend with an 03 s2k. I have done a Comptech s/c, ecu fuel and timing piggyback, fpr, header, cat-back, and many other suspension and interior mods. Anyways, it still is a turd on low end until v-tec and s/c kick in at 6500 rpm's. Then you better hold on. It runs 13 flat 1/4's...