Originally Posted by qtiger
Blah blah all these generalizations are false. Many cars come with ITBs from the factory. The key is proper sizing.
You make a good point. But it's been my experience that ITB's on anything smaller than a 2.0 liter engine really make for a shitty torque curve. It's a lot more doable on something with decent displacement like the S54 E46 M3 motor.
EDIT: As far as daily driving goes anyway. Track car who gives a fawk
h: