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

travisjb

Makes sense... I had a lot of rear lock up when I was running with ABS disabled - and yes it was after the AP Racing upgrade

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2009 370Z #104
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ChrisSlicks

No ice mode for me at the track yesterday, just lots of rear ABS lock up causing the back end to dance around in heavy braking. I just need to find a lesser pad to put in there and try out. Maybe AutoZone duralast specials

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

SPOHN

Nothing more than mental data and compairing it to what I read here. It's a very interesting issue that a lot of people have had.

I just wonder if there is slight difference in year model when speaking of this issue. No different than Nissan eliminating other small issue that have been known.

I was running XP8's all around now XP 10's front 8 rear on street tires (RE 11's). I know when I track I brake hard and feel I'm pretty good at it. I can't imagine it being any harder. I haven't mastered trail braking yet. I do go from some high speeds into some intensive braking zones like T10 at Road Atlanta where I feel if something was going to happen it woud there. But the tracks I have been to are not really that brake intensive either when it comes to continuous heat cycles. This tracks have good distance between zones.

Things I feel that has help is I have reduced some good weight from my car, brake ducts (ice mode would have to be a heat related issue also), and stiffer spring rates to help with weight transfer. I don't have much experience to bring to the table but my own experiences. Just trying to put it all together.

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SPOHN

^ better than spending $$$ on rear race pads. Might be what u do next time around to save a few. Plus we'll be more than ok to run that setup.

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ChrisSlicks

I guess it depends on how long they would last. I get the rears just warm enough to turn the first paint stripe (430C / 800F) but that is with race pads.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

M.Bonanni

Getting ready to sell a few things off the car. Threads with pics and prices will be up soon but wanted to give those who follow this thread a heads up in case they want some of the things!

- SEIBON Carbon TS style hood with Aerocatch hood pins
- 18" Forgestar F14 wheels with Hankook RS-3 tires (track setup) ***Looking for possible trade for stock 19" Rays + Tires***
- Password:JDM aluminum shift knob with color pack of changeable washers

And of course I still have these virtually brand new Continental Extreme Contact DW tires for sale too...

Continental Extreme Contact DW Tires - 95% tread left

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tibal

I know I'd be interested

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2010 - PG - M6 - 370zTT 453/409 6lbs

M.Bonanni

Selling a few small parts I had lying around the garage...

Garage Purging: Hawk, NRG, Mishimoto, Password:JDM, SPC

Oem vlsd

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M.Bonanni

Been a while since I have updated this thread and quite frankly its because nothing has been going on with my car. I did however just edit some video from 8 months ago from the last time I took my 370Z to the track...and probably the last time I ever will...

In-Car at Willow Springs + Off-track dirt action...Thanks Ice Mode...

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EventHorizoN

^bump for being a track beast!

M.Bonanni

Former track beast haha. She's not seeing another apex until she's a dedicated track car one day a long long time from now.

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EventHorizoN

your breaking my heart man

M.Bonanni

Not worth it with the ABS issues I keep having. Too frustrating to spend money going to the track and too much risk of damage on my daily driver with the ice mode. Down the road it will either get sold or get turned into a dedicated track car with an aftermarket dual master brake setup that completely bypasses the ABS.

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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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