[NYblack1le]

Took my usual clover leaf off ramp today and experienced some unusual understeer. I usually have the car in competitive mode when doing this but had all the nannies on this time around. Could the ediff cause the car to understeer ? The tires were plenty hot and was suprised the way the car acted mid turn.

[TRZ06]

What state are the tread depth of your tires in?

In general as your tires wear down , the car will feel more stable (less tread squirm), but will lose a little grip.

[TRZ06]

Could also be just the e-diff and systems working as well. Comp. mode leaves you with full traction at your control and just uses Stabilitrac.

What mode were you in?

[pbsinternet1le]

Understeer is typically caused by the pilot..

[TrackClub]

Originally Posted by pbsinternet1le

Understeer is typically caused by the pilot..

This plus ELSD is in the safest setting when you start the car and not pick one of the driving modes. It is in the same setting as PTM Wet, so very conservative with safety vs performance in mind.

[SaphfireSS]

If you haven't gotten an alignment you need to. Factory alignments are off 95% of the time. That can definitely cause understeer. And no the ediff will not cause understeer.

[TrackClub]

Originally Posted by SaphfireSS

If you haven't gotten an alignment you need to. Factory alignments are off 95% of the time. That can definitely cause understeer. And no the ediff will not cause understeer.

Elsd absolutely can affect car's handling as its parms are dialed for all 3 phases of a corner separately. Thats why in top dog race cars you can dial preload, coast, drive, number of clutches and other variables that very much affect and manage under and oversteer.

Our elsd has 4 different settings in a stock car depending on what mode one selects. If you dont select any elsd will be in its least aggressive mode dialed for safety and stability as priority. Hence one may absolutely feel more understeer.

[Dave-ROR]

Originally Posted by SaphfireSS

If you haven't gotten an alignment you need to. Factory alignments are off 95% of the time. That can definitely cause understeer. And no the ediff will not cause understeer.

So you are suggesting how the rear end distributes power doesn't effect slip angles? There's also the torque management part which is outside the eLSD and could have played a role here.

From the OP, we don't know what he was doing with the pedals and wheel, so I won't say that the eLSD didn't help cause what he experienced, but I wouldn't say it did either without more info (ie, throttle position, steering angle, etc).

The OP is used to that corner in comp mode, which is far more aggressive on torque delivery. I forgot which eLSD mode it uses but it's not the least aggressive.

[TrackClub]

Originally Posted by Dave-ROR

So you are suggesting how the rear end distributes power doesn't effect slip angles? There's also the torque management part which is outside the eLSD and could have played a role here.

From the OP, we don't know what he was doing with the pedals and wheel, so I won't say that the eLSD didn't help cause what he experienced, but I wouldn't say it did either without more info (ie, throttle position, steering angle, etc).

The OP is used to that corner in comp mode, which is far more aggressive on torque delivery. I forgot which eLSD mode it uses but it's not the least aggressive.

My poiny exactly. And comp mode uses a very similar elsd calibration to all off. So high slip angles will be allowed. Regular mode is the same as ptm wet, so very small slip angles only. Hence id expect understeer to be one of the results.

[SaphfireSS]

But that is exactly what I am saying. The elsd didn’t cause it the mode and ecu did. Dave is correct in needing way more info for this to be helpful. Lol