Quote Originally Posted by Dat Black Kid View Post
I don't know the gains, and I know someone will correct me on this, but I researched that it's best to get a turbine wheel that closely matches the compressor wheel. Turbos work better with an over size turbo shaft, than an over sized compressor wheel. As for blades, you can go with a 9 or 11, turbine blade, which would net you more air flow to pass through the turbine.

Please correct me if I'm wrong on any of this.

If you're only going for HP gains get a Stage 1 ECU tune, HFC and exhaust, and stick with the K04. Other option, bigger turbo.
A K04 on a B7 is a stage III upgrade my friend. He isn’t going to want to run a K04 on a stage 1 tune. 😀