Like everyones Dyno's doing the stock turbo, you can see there efficiency falls fast after 4500 rpm's. It's nice to see that the RWHP did carrier over pass 5K, but still over that it's to small to see major improvements like big housing turbo's as you know. But at 6200RPMs in 4th gear like this Dyno, the car is already going some 123MPH and still has 20MPH more left until redline at 7200RPM's. But again, car's past efficiency on T25's and it will go fast yes, but peak is way over and may show signs of spiking typically found while using boost jets as a means of building boost.