NO LSD???????

[Legend@wheels]

Originally Posted by Tokay444

IKR? It's almost like they're complete opposites of each other.

Yeah definitely

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[Legend@wheels]

Originally Posted by Spuds

New theory from recent experience: In long press mode, the reason people think that TC/VSC is still working is actually because of hitting the torque dip just as the slide is initiated. You had torque, then there is less torque as soon as rear wheel speed increases, whether due to slide or acceleration or both.

And the light on the dash was flashing ? When it was intervening

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[churchx]

Ultramaroon: i didn't try to argue, it was a question, as i somehow fail to imagine procedure of fixing or replacing what can involve need to switch off nannies :/

[Ultramaroon]

Originally Posted by churchx

Ultramaroon: i didn't try to argue, it was a question, as i somehow fail to imagine procedure of fixing or replacing what can involve need to switch off nannies :/

Oh!


It's for safety on rollers just like you said - dyno, speedo calibration, ... whatnot.

[churchx]

Moving even further into offtopic debris
Speedo calibration procedure? I'd be very interested in that. Always hated speedo lying by reporting higher on modern cars and would prefer if there was a way to adjust it to show readings closer to real/gps readings. Didn't bothered searching nfo on that as i always thought that it might be set in hardware or somewhere obscured in firmware of eg. some circuitry boards in dash, that no mere mortals can adjust. By chance maybe you stumbled upon it in some manuals?

[Ultramaroon]

Originally Posted by churchx

By chance maybe you stumbled upon it in some manuals?

I don't think it's easily altered. Only through some sensor trickery can I think of a practical way to change the speed calculation. The wheel speed sensors feed directly into the ABS unit.

[churchx]

Ultramaroon: no .. changing not readings of sensors, but just display of them. For example with button press on cars of some DMs you can switch between miles and km-s. Wheel speed sensors still provide same input. Now if only there been some easy enough (not requiring special tooling/soldering/highly specialized firmware programming solitions for dash circuitry and such) procedure to adjust .. hence i hoped you noticed in some docs/manuals info about it, when mentioned speedo calibration in relation to PD. I wonder if in ECU tune there might be something regarding imperial or metric measurements, and if it cannot be (ab)used in some way for that goal. Or some "calibration" setting/ratio/number in techstream. Something alike.

[Ultramaroon]

I haven't come across anything of the sort.

[Spuds]

Originally Posted by Legend@wheels

And the light on the dash was flashing ? When it was intervening

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Well, I'm fairly certain the light will flash when the car thinks you are sliding, whether or not it tries to do anything about it based on my experience of it. I'll definitely be paying more attention to it for a while though to see if I notice anything.

If I were designing the system, I would make the flashing warning light a notification that something is wrong ("DUDE your sliding!"), rather than letting the driver know everything is working as usual. If there was some sort of TC/VSC fault, you would still want that warning to appear, right?

[Kodename47]

Originally Posted by churchx

I wonder if in ECU tune there might be something regarding imperial or metric measurements, and if it cannot be (ab)used in some way for that goal.

ECU and dash display feeds are different. I have corrected my ECU speed with EcuTek but the dash remains unchanged. I have had it confirmed that it cannot be corrected with an ECU flash, it would have to be a calibration of the cluster or the output to the cluster.

[Tokay444]

I've had both '16 and '17 model years throw the flashing slip light and intervene with brakes while having been in long press mode, during an aggressive and bumpy switchback hill climb. Inside rear tire most definitely left the ground.
I can also confirm pedal dance eliminates this effect on the same stretch of road.

[CSG Mike]

Originally Posted by Spuds

Well, I'm fairly certain the light will flash when the car thinks you are sliding, whether or not it tries to do anything about it based on my experience of it. I'll definitely be paying more attention to it for a while though to see if I notice anything.

If I were designing the system, I would make the flashing warning light a notification that something is wrong ("DUDE your sliding!"), rather than letting the driver know everything is working as usual. If there was some sort of TC/VSC fault, you would still want that warning to appear, right?

If it's flashing, it's doing something.

I know of a driver who can do drift donuts all day with a 5 second press, but can't with pedal dance.

[Ultramaroon]

What is this world coming to?

[ermax]

You can also use Techstream to put it in inspection mode. I’m not sure if it’s 100% identical to PD mode though. I haven’t spent much time in PD mode due to laziness so I can’t say for sure. I have successfully captured the canbus traffic related to inspection mode and use a Raspberry Pi to turn it on automatically. Problem is I am normally moving before the Raspberry Pi finishes booting and the car ignores the canbus packets for inspection mode if the car is moving so it was never very practical. Need to port my code to an Arduino that boots almost instantly. But laziness and lack of time has prevented me from getting to it.