[kawi600]

in some situations, its important -where- you make the power. a cam is going to move power around in the rev range.
for a city DD and tow, once you put the cam in you lose that low rpm torque and it tends to smoke more on take-off.
The smaller turbo helps, but its also going to limit the top end which is where most cams are designed to make power.
A cam would probably work well with higher compression pistons but not many people go in that direction so example builds and results are hard to find.