Haha seeing your car there was a treat Stu.
The AA tune, as a flash tune, is the only thing you can really do to an N52 motor to get it to perform. Difference between a N52 with a tune and without is massive.
Amazing throttle response, a very noticeable increase of usable power and silky smooth WOT.
Still no 335 but easily and by far the best thing to spend your money on if you have an N52 motor.