The XR6T is quicker than my previous 200kW AU XR8, however, you will notice a big difference in bottom end grunt, up to about 20kph... but then whoosh..off you go. It is a little disappointing, but once you take off you forget about the lag, and I don't care what anyone says.. there is lag, and it's very noticeable. Maybe not compared to other Turbo's but coming from a V8 you can feel the difference big time. All you have to remember is it's just a different power curve to a V8. No wheel spin if you plant your foot in the Auto, but in my old XR8, it would do it every time. This could be a suspension thing also??