Picked up a 19t billet wheel and matching compressor housing, the inlet on the housing is quite a bit larger. I read a couple threads and it's supposed to keep fast spool with a bit more midrange & top end boost.
[email protected] A/R....Comp In/Ex...C.Trim..Exh Ex/In..Ex Trim....Full boost (rpm) TD04L-13T.........390............0.41........40.5/55.9.......52........41.1/47.2..76.............2800-3000 TD04H-19T........500............0.41 ........45.9/58..........63........44/51.9.....72.............??? TD05H-16G........505............0.49........46.5/60.1.......60........49/55.9.....77...........+600 VF28 (BB)..........420(410)....0.63 (P18)46.7/60.0.......60........48/53........82...........+500 VF30.................440(435).....0.63 (P18)47.9/60.0.......64.......48/53........82...........+800 VF35.................440 (??)......0.51 (P15)47.9/60.0.......64.......48/53........82...........+500 VF22 (BB).........451 (440)....0.71 (P20)48.5/60.4.......64.......48/53.........82...........+900 We shall see... found this on NASIOC ^^^^