Phil,
If you think that, check your turbo / exhaust manifold after a few thousand miles . Just put an EGT gauge in your car and you'll shit yourself .

Mark,
I've just checked and it is 35lb ft at 7k . As Azrael has explained (quite clearly ), there is a HUGE difference where the restrictor is put. It does not matter if you have the billion pound budget, you can't exceed more than 320bhp through the current restrictors - not without defying physics or cheating*.

*See Toyota back a few years .

Anyway nice discussion .