Haven't had a chance to 1/4 mile it yet. But just driving it around, it's obvious that a considerable increase in mumbo has been installed under the right foot. eg, driving up Arthurs Seat hillclimb, crap ignition timing (idle = 40!!), RWD mode (temporarily lost the throttle signal to ATTESSA), minimal throttle, and little or no boost, it would light up the rear tyres coming out of the corners. Something only ever dreamed of with the RB20DET.
There is a HEAP more torque, and a lot more power.