Me like talking about this.........not that i know what the hell im talking about
Hi Ad, if i was you mate i would do what daza said, do it all at the same time, "ie" njectors/return fuel lines /pump upgrade/FPR..........and when its all done all you will need to do is then "uprat the internals"
and as to what im haveing done to my IS, no one knows........all i know, at the end off the day it will be a dame lot faster than 1g-fe when its done that is (Dave) :D
Back to your i think the 1G-FE is good upto about 300bhp but that is maxing it out, i would say to be on the safe side, dont pass 270 with out doing the nternals!!