Seems to me that you could disconnect that connector and tape it up and run without it if you really wanted that higher ratio rack. I'll admit, when I first got my car I was used to driving trucks and the steering at highway speeds was so sensitive I found it difficult to not weave. But, now I drive with nothing but slight flicks of the wrist.
To put it short, you'd notice your lack of "Magnasteer" along with the quicker ratio and find it very sensitive at first. But, you'll get used to it and really enjoy the quicker feel of the car.