The fly by wire throttle will only deliver a percentage of the power initially - I believe I was told it was 80% until you have done over 2000 miles, then goes up to 95% - don't get the full monty until you have done over 6000 miles
Re ; running the car in - in my experience, do what the book says for the first 1200 miles - keep it between 2 and 4 revs.
After that, drive it hard - not only is it fun - but I have found it really helps the engine and gearbox loosen up.
Warm it up - then get it to the red line in as many gears as you (safely and reasonably) can.
I found my engine revved much more freely after a few good blasts
:D:D:D:D:D