I have found that the TCS will engage at some times when I expect it to, but not others.
When I first got the car, it had some relatively cheap tires on it, and I could induce oversteer with the throttle in corners very easily, and the traction control never came on. I could also spin the tires in the rain without the car moving for at least a full second without the traction control coming on.
So far I've only had it engage twice, both after I put on a set of Yoko A022's. The first was at an autocross. I didn't turn off TCS because I thought it didn't work.
The course must have been designed by a Camaro driver, it had a cone near the end that you had to do a 180 around (or take wide and slow, but that's no fun
...and I wanted to find the limits of my new tires). The first time, I tried to slide the car and all I managed to do was to get it to wag the tail a little bit (it's a lot harder to induce oversteer on an NSX than a Fiero...). The second time, I actually slid the rear a bit...not quite as much as I wanted, but traction control came on, so I may be lucky I didn't manage to slide it more and not have enough power to regain traction in the proper direction.
The second time was on a left hand turn on a public road taken fairly fast, but not pushing the limits. The car felt perfectly stable when i hit the gas to accelerate as I was coming out of the corner, and noticed the lack of power and that the TCS had engaged.
Does this sound like normal TCS behavior?
Is a difference in speed between the front and rear axles the only thing that causes TCS to engage? And are there 2 sensors (1 per axle), or 4 (1 per wheel)?
[This message has been edited by Sketch (edited 20 July 2002).]