Much of my previous post about the comparison to the SRT still holds.

From a performance standpoint I would place the Limited or Base Crossfire in between the Z4 2.5 and 3.0. Faster than the 2.5 and slightly less than the 3.0.

That all changes for '06 though. There are only two versions of the 3 liter. One at 215 HP and the other at 250 HP. For '06 I would say performance is about on par with the Crossfire in the 3.0 and less on the 3.0i.