I have a 2004 G35x, which is arguably the slowest G35/7 ever made, 260hp, 5AT. Ran a email@example.com with just an intake from a 350Z and K&N drop-in filter. This is obviously nothing to brag about. CandD got a 14.6@96 with the 328i, which has 30 and 60 less hp and torque than my car.
I drove my friends stock E92 328i 6AT from AC to NY, and the car felt INSANELY quicker on the top end when compared to mine. My car is heavier, AWD, and im sure the gearing is much better on the bimmer.