Here's a look at Stage II on a 2007 Sky. Only other performance mods to the car are a Magnaflow 2.5" exhaust system, and a custom downpipe with no catalytic converter.
Of course, its off-road use only for such a setup, but the capability is there for some significant power, even with a high-flow cat. This was recorded at 10 PSI boost with 93 octane fuel.
Check out the torque curve that's just a mile wide! And right where torque begins to reduce, the HP curve is rising nicely, taking her screaming to redline. The area under the curve on this graph can only be describled as massive.
As for the torque rising, then leveling off at about 3400 RPM, that's the typical way a turbo car responds to the dyno. For some more information as to what's happening below 3400 rpm, check this thread's videos and you'll see that usable boosted torque, when requested, is actually available at as little as 2500 RPM with our turbosystem:
Low-Speed Turbo Response
Should any of our existing Stage II customers be interested in a similar setup, please PM me.