Currently the car has 258rwkw on E85, the engine realy hits a wall at 7500rpm with 4deg exhaust cam retard, and 8000rpm. Idealy I'd like to spin it to 8500rpm. My thinking is that it will be a combination of rear housing size, and cam timing.
I don't want any more power, the turbo has produced 270rwkw on a different 20 (that I killed), and any extra power will just make the car slower on a rally.
Current turbo specs:
Compressor wheel:
Billet-D, 52 trim
Inducer 51.3mm, Major 71mm.
Turbine:
Cropped back TO3 72 Trim
Major 59mm, Exducer 48.7mm.