I have a red top in an s13 (who doesn't) It is bored .030 over, metal hg, built bottom end, 9:1 comp, otherwise stock, fresh swap type deal, swap was bought, built, and then put into the car, I know it will need to be tuned, once it runs decent it will be. It runs like shit, it idles alright, misses a lil, any throttle makes it bog and then rev up, full throttle makes it bog til it dies. I started with the tps and get ~.09 v closed throttle and ~.12 WOT. The reason for this seems to be that the signal wire when unplugged reads ~2.5v instead of 5v. WHY? Im being fat and lazy and hoping someone tells why so i don't have to go outside and fuck with it . Hopefully god will post up