A lot of 2jz are now running gtx4294r or it's smaller brother gtx4202r and claiming to have same and better response than a t04z and can achieve t51r like kw and they have tried t04z before hand.i wouldnt mind more power but than again same power with more response would also be good.im really looking at the gtx4202r now,just read that a 2jz starts seeing bOost at 2500rpm and on song by 3800 rpm.im also running pump but I don't know if I an be bothered changing my fuel system to suit e85 and order it by the drum.i do t trust servos either