ODR SCCA Autocross at Pungo July 5th
It's in the ABS, it's called ICE MODE, if I get on the brakes too hard and the pads grip too much, the computer thinks I'm on ICE and regulates the ABS as if a little old lady is driving. It happens mostly when I'm in my third or fourth run when the pads heat up, and I'm pushing the car more.
You're more than welcome to co drive at pungo if you want... just let me know.
Speaking of codrivers,,, my wife came out to watch me race twice. After that, she started driving, too! Now it costs me twice as much to race *and* we have to find a babysitter! I guess the pro side is that I don't have to argue very hard to drop 2 grand on a set of racing tires
Last edited by sjfehr; Jul 7, 2009 at 12:47 PM.
SSSupra,
Here's an explaination of the "ICE MODE" brake issue you saw first hand when you rode with me. Coming in hot and hard on the brakes causes it, especially if the RPMS are high. I'm surprised the corvettes don't have this issue, curious if the ABS module is the same or if it has different firmware.
"I don't doubt you're seeing Ice Mode at all. I got it twice at the same event last month. It seems to be exacerbated by left foot braking, high RPM and bumps. The ABS sees a rate of wheel speed deceleration that it doesn't think is possible (race tires and pads) so it ASSumes that you're on ice and dials back the line pressures. If we could change that value that its using to determine maximum expected decel, we could effectively eliminate Ice Mode. I'd also like to be able to change the wheel sizes and / or number of reluctor pulses for 1 revolution."
Here's an explaination of the "ICE MODE" brake issue you saw first hand when you rode with me. Coming in hot and hard on the brakes causes it, especially if the RPMS are high. I'm surprised the corvettes don't have this issue, curious if the ABS module is the same or if it has different firmware.
"I don't doubt you're seeing Ice Mode at all. I got it twice at the same event last month. It seems to be exacerbated by left foot braking, high RPM and bumps. The ABS sees a rate of wheel speed deceleration that it doesn't think is possible (race tires and pads) so it ASSumes that you're on ice and dials back the line pressures. If we could change that value that its using to determine maximum expected decel, we could effectively eliminate Ice Mode. I'd also like to be able to change the wheel sizes and / or number of reluctor pulses for 1 revolution."




did you post a video on streetfire a while back of a autocross in nc?
i did not know they had a novice school. what group were you in? what were you driving? novice school would help me some i am sure.