M.Bonanni Project 370Z V3.0 | Clean Slate

sig11

To beat a dead horse.... I wonder why some folks have this issue and others don't. There have been a lot of posts on my350z about the same thing lately. Must have something to do with braking style.

M.Bonanni

Definitely does not have to do with braking style. Although I am sure it can play a role, I have tried to drive around the issue a million different ways changing my braking style, braking points, etc. I will copy and past my theory from the video thread...

"From talking with countless people, professional race teams, etc. I am subscribing to the theory that the ABS computer has parameters set for wheel speed, steering angle, g-forces, brake pressure, etc. If you exceed the parameters through a number of possible situations like too much brake pressure + too much steering angle then the ABS computer triggers ice mode as a safety measure to prevent a spin. I think the settings for the parameters are way too low for driving this car on the track. Plus I think modifying your car only makes it more likely to happen. Adding things like a limited slip differential will change the wheel speed in the rear compared to the stock VLSD. Adding things like suspension and sticky tires will mean you are capable of more lateral and braking gs. In my particular case in the video where I had the off, the mph is high, the car is turning so there is steering angle, and that combined with g-forces above what you would see on the street meant that I was probably already violating the computers parameters so as soon as I even breathed on the brakes the ABS tried to straighten the car out and because I was already at the edge of the track it was enough to put my left side tires in the dirt."

So, perhaps many aren't exceeding the parameters set in the computer. Perhaps Nissan updated the parameters further into the production as my Z is a VERY early 2009. Perhaps my specific setup allows it to be triggered more easily. All I know is that it is a VERY prevalent and intrusive problem on my car so for that reason, I am over trying to track it.

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