fyp
Having an extra 20kws right up the top of teh rev range does not make it the better package when you are forever waiting for it to start moving forward
Dont forget both Paul and Steve made more power going back to -5s at less boost too from memory
iirc Steves RB30 still didnt see full boost until after 5000rpm, same goes for GTRNUR's RB31 with GT-RS'
Im sure they can comment to confirm
Either way, I'm not going to tell you your setup is no good, its up to the owner to setup a car how they like, and if you like the GT-RS' than that is fine, and I cant really talk because I'm 95% sure Im going to throw a T04R onto a 1J lol
Do you have a dyno sheet of the 440kw 2.6 run? or a time slip?