Quote:
Originally Posted by b3lha
The ABS on my legacy sometimes comes on too early, before the wheels have started to lock up. I think the way the ABS computer works is by comparing the measured deceleration with a limit. If the limit is exceeded the computer assumes lockup. But the limit is too low. The car can actually decelerate more quickly than the programmed limit without lockup. A while ago, one of the brake light bulbs blew and that triggered an ABS error and shut the system down. I really noticed the improvement in the braking with it off.
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I don't think this is how ABS works. A car's deceleration rate is to dependant on other conditions, such as tires, and most of all, road conditions. As far as I know, the wheel speed sensors detect a sudden drop in wheel speed and attribute it to wheel lock-up, then the ABS does it's thing.
I always disable my ABS at the track. When I'm pushing the car it will stop much better in snow without ABS. In a skid the front wheels will plow and build snow in front, which slows he car. An ABS stop lets the wheels keep turning and doesnot build and snow in front.