Your thoughts seem very intuitive Sewin regarding toe out reducing steering response and toe in improving it. In actual fact though it's the exact opposite, ask any racer. I quote this response on the subject which better explains than I can.
With toe out, if you were to turn right, the inside wheels would actually turn in more and the outside wheels would actually straighten up more and would fling the car round the corner, increasing turning ability and decreasing understeer. Though on the straights, it's a lot more unstable than toe in because it can cause the car to twitch left and right. Toe in is the exact opposite of what I said
I have personal proof of this. After fitting the SSL RS dual rate conversion I naturally took the car for a thrash round the local lanes. The improved turn in allied to comfort was immediately apparent as I chucked the car left and right. Later on though, whilst still being sensitive to the changes I had made, on a straight road I perceived a slight wandering. This prompted me to have the tracking laser checked and adjusted. Not too surprised to hear that toe out was found before correction, cannot remember how much but it was more than the ideal toe in.
