Once the turbo is on and tuned, the engine will be removed and dyno'd to make sure it performs as advertised. Then back into the car, and into my eager hands!
Good luck driving that car on the streets, then. An engine tuned to perfection on the dyno will never be "perfect" on the streets. No matter how good the dyno, the tuner or your favorite MOTEC is, the dyno will never represent the "real world" that engine will be used in. It is obvious and I don't understand how you can overlook this very important bit of info.