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

cossie1600

You can try racerender for merging two videos together, I believe the basic version is free.

Shamu

I think most of us who have pushed these cars hard on track have experienced this issue. It's scary as hell. Especially those of us who threshold brake and trail brake.

Honestly I haven't experienced ice mode since putting large vacuum reservoir on stock braking system. I do think part of issue is vacuum related.

As far as bias when you disconnect abs. While yes bias goes to rear you can tune suspensions and brakes to work without car spinning. And it does take some modification of braking style.

I will be interested in what you do. I know race car up in Nor cal switched to expensive motorsports abs system. What are you thinking? I have heard that there might be ability to tune this out of stock system but no one is willing to take liability of doing this on stock system.

I think it's absolutely criminal that Nissan doesn't warn people about likelihood of this ice mode occurring in motorsports and prohibit track driving of these cars as part of warning to less experienced drivers. You and I and other experienced drivers have managed not to wad up car when this ice mode happens but how about less experienced driver who target fixates and doesn't know how to slow car down without brakes? I'm still convinced the car that magazine testers put into the wall when car was released experienced ice mode and not brake fade.

I'm also curious have you checked rear calipers and are they ok? No leaks etc. I had a stock caliper go bad which I think was contributing to ice mode issue as well.

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Grant

M.Bonanni

Honestly for me, this is my daily driver right now so I will likely just keep it off the track all together. Down the road if I am able to turn it into a dedicated track car then I would probably go with an aftermarket dual clutch setup with bias adjustment and bypass the ABS all together unless someone comes out with a programming fix.

I had my calipers re-built completely and have checked them periodically and still have the issue so I don't think that's the problem. I think what Downshift said about the pump burning up might be the key to why mine just keeps getting worse.

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Shamu

So wonder why mine was getting worse and worse and then when I put vacuum reservoir on circuit it stopped all together? Haven't had a single instance of ice mode since making that mod? That's only change I made to car as well. Same tracks, same tires, same pads. No ice. We use similar fix in Porsche world with fairly good success, but again ice mode in Porsche world isn't like ice mode we experience. At least with Porsches ice mode doesn't occur until you truly are at threshold and tires would be locked up and their system recovers more quickly than the system on370z. My experience with ice in 370 z prior to vaccum upgrade has been from initial application with car headed straight and I have had enough room to reapply and still nothing at all. Literally forces me to pitch car sideways to slow myself down.

I'm sure a burned out pump in some cars contributes to malfunctioning abs but I'm not sure that's our issue.

Also it's tough to compare a time trial car that takes limited stints on track to professionally driven endurance race cars on race slicks as well. That's a whole different world of stress on braking systems. Hell even racing systems fry in those environments.

Just wonder if spec 350z guys are running off tracks all the time like few stock abs system 370z track cars are. I know 350z had mild ice brake issue so does GTr but nothing like 370z.

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Grant