[Jesse@PureTurbos]

A compressor map tells you a lot about the turbo. It's a good piece of information.

It does not tell you everything you need to know about the turbo.

It is a map of the compressor wheel only.

Things that can hinder the performance and potential of the compressor wheel:
Compressor housing size
Turbine housing size
Turbine wheel size
Improper balance
Machining clearances
etc...

Real world data (dyno sheet) is the final end result and it's the best way to see what the turbo can actually support. It takes all the other previously mentioned turbo components into account.

Our billet wheels make big power. We recently upgraded a customers GT2871R 52 trim with our billet wheel. He's in europe running a fully built toyota 1.5L motor. He made 416whp and 425Nm of torque at 2.0bar of boost. This is not an amazing result but it shows that our billet wheels work VERY well. Another simple example is a GT4202R we upgraded to our billet wheel. It is on a diesel pulling tractor and made 918HP and 2206 Ft/Lb at 97PSI!!! Yes that's right, our billet wheel survived up to 97PSI with no issues.