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Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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06-14-2021, 07:58 AM | #15 | |
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I do think running without ABS is costing me a bit of time as I can't SLAM on the brakes as late, have to *squeeeze* on them a little earlier. Probably no more than a tenth or two but I *need* that (2nd last event by less than a tenth). At some point I'll go ABS again but as it is I can't trust my unit at 10/10ths at the track. IMO the (17+ anyway) stock ABS performs GREAT at the track with the long-hold on the TCS button. I believe earlier models require pedal dance vs. long-hold. Not sure if earlier models would benefit at the track from pulling the 40A ABS fuse but I'd bet most would be reliably faster with pedal dance and with ABS. |
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06-14-2021, 08:03 AM | #16 |
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You just pull the bigger 40A abs fuse. But IMO there is no good reason to do this vs. pedal-dance unless you specifically want to develop threshold braking skillz without ABS and don't care about occasional lockups and generally doing slightly slower lap times.
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06-14-2021, 08:24 AM | #17 | |
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I never get the warning lights on the street with the fuse in, haven't tried for enough laps to know for sure at other tracks but too scared to do so. I probably will ultimately just replace the whole ABS brains with new, but $1500 or so... For now I leave the fuse in on the street and pull it at the track. Last edited by ZDan; 06-15-2021 at 06:45 PM. |
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06-14-2021, 09:34 AM | #18 |
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Thanks for the input. Will just stick with the pedal dance for now
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06-14-2021, 01:09 PM | #19 | |
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I would agree with your advocacy statement if we changed it to "unlikely but real possibility that the designers got it wrong."
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06-15-2021, 09:23 AM | #20 |
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Legitimate LOL @ "Think Autocross.... but still a challenge".
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06-15-2021, 09:24 AM | #21 |
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Hey gotta get my fix somewhere during the summer. Shit is way to hot now
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06-15-2021, 06:34 PM | #22 |
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I'm just glad you finally came to the dark side!
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06-15-2021, 08:28 PM | #23 | |
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I thought I read that ICE mode was an occasional problem WITH using pedal dance, and NOT an issue when using the long press. Which is it? I've always long pressed and never had ice mode. I've shied away from pedal dance for fear of ice mode, plus long press has never intervened in at any time when the run wasn't gone to shit anyway. |
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06-16-2021, 12:56 PM | #24 | |
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With that said, I see no reason to not use the long press. Any interference that I've gotten wasn't particularly unwelcome. Like if my wrists are crossed and I have the inside rear wheel hiked up in the air, I probably don't need more throttle in that given split second. |
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06-16-2021, 01:04 PM | #25 | |
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If the code kicks in during the least intrusive mode (pedal dance) it would seem to me it would kick in in pretty much any mode. I suppose the long press could leave a case that becomes active in before ice mode, that is absent from the pedal dance, but that seems unlikely. Just a thought.
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06-16-2021, 01:14 PM | #26 |
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Ice mode is baked into the ABS firmware. The only way to disable it is by pulling the ABS fuse. With any normal driver-selectable VSC mode, the ECU listens to the ABS module. With pedal dance, ABS still works but only as an independent (old-school) system. The rest of the car doesn't listen to it. No throttle pull or EBD because no yaw gyro signal.
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06-16-2021, 01:18 PM | #27 |
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Ice mode is more prevalent during pedal dance because you're switching the ABS to single channel mode, it's dumber and reacts in a 'safe mode' when it thinks you're on ice. Ice mode does exist in all the other ABS modes, but the ABS is acting more intelligently so the threshold for ice is much more accurate. I've never felt ice mode in a standard mode, but I have activated it multiple times during pedal dance.
I found I could brake around the potential ice mode with a more progressive braking application but found no extra speed vs the regular 5s tc off button press. The lack of electronic brake biasing does allow for more weight transfer and turn in rotation but my car is generally set up to not need that and the auto-lsd feature doesn't slow me down, I can feel it, but that's only when I'm doing dumb things. Note this is autox experience, would probably re-evaluate if I get back into track because everything is a sweeper. |
06-16-2021, 01:33 PM | #28 | |
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My understanding with the pedal dance is that ICE mode happens with a much greater frequency, at least in an autocross setting. |
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