I have had 3 VE's now. And all of them have a slight second lag from when you press down on the pedal to when you actually move.
I installed a Revhigh Throttle controller to my first stock SV6 and no bullshit, you definitely feel a difference. Highest level spun the wheels so easy.
In-fact i actually started to love my sv6 alot more after installing it. It makes the car feel how it should have felt from factory.
When I upgraded to the r8 next, as much as I wanted to, I didnt have the balls to install it because it had already been heavily modified / tuned.