Right people ah have a little info i got off the net that you guys might find useful.. 
Flow Rates @ 15psi: 
TDO4-9B-6CM2 265 CFM 
TDO5-12A-8CM2 320 CFM 
TDO4-13G-5CM2 360 CFM 
TEO4-13C-6CM2 360 CFM 
TDO4L-13G-6CM2 360 CFM 
TDO4L-15C-8.5CM2 390 CFM 
TDO5H-14B-6CM2 405 CFM 
TDO5H-14G-8CM2 465 CFM 
TDO5H-16G-7CM2 505 CFM 
TDO5H-16G-9T ______________________(E4) 49178-01500 961118003 
TDO5H-16G-10CM2 505 CFM 
TD05HR -16G6 -10.5T (Inconel) (505 CFM?) (E5) 49178-01500 990309072 
TD05HRA-15GK2-10.5T (Titanium) (505 CFM?) (E6 TME GSR.) 49178-01500 990309072 
___________________________________________________49178-01570 000313030 
TD05HRA-16G6 -10.5T (Titanium) (5xx CFM?) (E6 TME RS, RS & RS2.) 
___________________________________________________49178-01560 000727000 
TD05HR -16G6 - 9.8T (Inconel) (505 CFM?)__________(E7) 49178-01590 9102051xx 
TD05HRA-06*16G6- 9.8T (Inconel) (505 CFM?) (E7) 49178-01590 00101x002 
TD05HRA - 16G6 - 9.8T (Inconel) (505 CFM?) (E8 RS) 49378-01510 021210186 
TDO6-17C-8CM2 550 CFM 
TDO6H-20G-14CM2 650 CFM 
TDO7S-25G-17CM2 850 CFM 
TFO8L-30V-18CM2 1200 CFM 
Max Output: 
TD05-14B (stock 1st gen) 275-300hp @ 21 psi 
TD05-16G (small) 345-365hp @ 22 psi 
TD06-16G (large) 365-385hp @ 22 psi 
TD06-20G 430-450hp @ 22 psi 
T25 (stock 2nd gen) 235-250hp @ ?? psi 
T3 (super 60)/T2.5 hybrid 265-280hp @ ?? psi 
T3 (super 60)/T2.8 hybrid 270-320hp @ ?? psi 
Evolution 1 
Turbo = TDO5H–16G-7 
Nozzle Area (cm2) = 7 
Exhaust turbine = Inconel (steel alloy) 
Compressor = Aluminium, 60mm wide 
Evolution 2 
Turbo = TDO5H–16G-7 
Nozzle Area (cm2) = 7 
Turbine = Inconel (steel alloy) 
Compressor = Aluminium, 60mm wide 
Evolution 3 
Turbo = TD05H–16G6-7 
Nozzle Area (cm2) = 7 
Turbine = Inconel (steel alloy) 
Compressor = Aluminium, 68mm wide 
Evolution 4 
Turbo = TD05HR-16G6-9T 
Nozzle Area (cm2) = 9 
Turbine = Inconel (steel alloy) 
Compressor = Aluminium, 68mm wide 
Evolution 5 
Turbo = TD05HR-16G6-10.5T (GSR) 
_______TD05HRA-16G6-10.5T (RS) 
Nozzle Area (cm2) = 10.5 
Turbine = Inconel (steel alloy - GSR), Titanium alloy (RS) 
Compressor = Aluminium, 68mm wide 
Evolution 6 
Turbo = TD05HR-16G6-10.5T (GSR) 
_______TD05HRA-16G6-10.5T Titanium (RS & RS2.) 
Nozzle Area (cm2) = 10.5 
Turbine = GSR - Inconel (steel alloy), Titanium alloy (RS/RS2) 
Compressor = Aluminium, 68mm wide 
Evolution 6 : Tommi Makinen Edition 
Turbo = TD05RA-15GK2-10.5T (GSR) 
_______TD05HRA-16G6-10.5T (RS/RS2) 
Nozzle Area (cm2) = 10.5 
Turbine = Titanium alloy for both RS/RS2/GSR! 
Compressor = Aluminium, 65mm (gsr) - 68mm(rs) wide 
Evolution 7 
Turbo = TD05HR-16G6-9.8T (GSR) 
_______TD05HRA-16G6-9.8T (RS/RS2) 
Nozzle Area (cm2) = 9.8 
Turbine = GSR - Inconel (steel alloy), RS/RS2=Titanium alloy 
Compressor = Aluminium, 68mm wide 
Evolution 7 GTA 
Turbo = TD05-15GK2-9.0T 
Nozzle Area (cm2) = 9.0 
Turbine = Inconel (steel alloy) 
Compressor = Aluminium, 65mm wide 
Evolution 8 
Turbo = TD05HR-16G6-9.8T (GSR / USDM E8.) 
_______TD05HRA-16G6-9.8T (RS/RS2) 
Nozzle Area (cm2) = 9.8 
Turbine = USDM EVO 8 & JDM GSR =Inconel (steel alloy), 
_________RS/RS2=Titanium alloy. 
Compressor = Aluminium, 68mm wide 
All Evo 4-8 Turbos are twin scroll designs meaning that the engines exhaust is divided into two channels (see first pic). As the engine exhausts in pulses.. its supposed to result in quicker spooling. From the Evo 4 onwards, the Turbo spins in the opposite direction, i.e. Anticlockwise (hence the R in the turbo name). 
The Titanium Alumnide alloy used in the RS/RS2 and some GSRs (factory option) has less inertia and thus spins up around 500 rpm sooner. 
These Titanium turbos can be identified by the “A” in their name. 
Addendum:- 
Evolution MR aka "8.5" 
GSR = TD05HR-16G6-10.5T or TD05HRA-16G6-10.5T (Ti Alloy option) 
RS = 6MT:TD05HRA-16G6-10.5T or 5MT:TD05HRA-16G6-9.8T 
Nozzle Area (cm2) = 10.5 or 9.8 (RS-5speed) 
Compressor = Aluminium, 68mm wide