i did a search and i'm still confused as hell. thats why i'm lookin for some input on something thats focused around my car... not a stock gs-r or an ls. anyways, i've been talkin to some people and i've heard that a jrsc with my current mods won't really help me in any way due to the climate. also if i do decide to get the jrsc, would i need to upgrade the ecu and fuel system?? i'm only plannin on runnin 6psi.