[mlee]

Originally Posted by 17CamaroZL1

Cool! Are the 19s available to order yet? Are you going with white again?

Not yet... and looking for a new color to come out.

WoW Ted... I hope they work this out quickly. Doesn't sound like what I experienced but could be related since so many others have experienced it.

[JANNETTYRACING]

Originally Posted by travislambert

If you turn traction control off and spin the tires going straight, both tires should spin. If only one spins that would confirm a problem with the eLSD. When the clutches don't work, it will behave exactly like an open differential.

Also, some vehicles can apply each rear brake independently to vector torque. I don't know if the Camaros do this or not, but it might be worth checking into.

Originally Posted by travislambert

Oh. It's probably worth checking your steering angle sensor. That a major input for the eLSD. If it thinks you're trying to turn while you're actually trying to go straight, it would throw everything off.

The easiest way to check is use your PDR to record a video while trying to drive straight. Make sure you use an overlay with the steering angle. It should read near 0 degrees while going straight.

Yes the car spins both tires and now goes straighter with my corner weight adjustments.

I would like to know more about how the ELSD works and the Torque vectoring works.

Been driving it and watching different screens but still don't see anything that points to the problem.

I will try the PDR.

Ted.

[JANNETTYRACING]

Originally Posted by Bx Tpr

Same thing here. Had my bro in the car out on the interstate a few months ago. I went WOT in the right lane and ended up in the middle lane a second later lol. I thought it was just the combo of a bad roadway and wide tires.

Do you still have the car, can you test it again to verify same problem.

Ted.

[JANNETTYRACING]

Originally Posted by mlee

Not yet... and looking for a new color to come out.

WoW Ted... I hope they work this out quickly. Doesn't sound like what I experienced but could be related since so many others have experienced it.

Thanks Mike.

[Mr. Wyndham]

Originally Posted by JANNETTYRACING

Yes the car spins both tires and now goes straighter with my corner weight adjustments.

I would like to know more about how the ELSD works and the Torque vectoring works.

Been driving it and watching different screens but still don't see anything that points to the problem.

I will try the PDR.

Ted.

I did read something from Tadge (Corvette Engineer) speaking about PTM modes...he said that in race mode, in order to maximize the computer's help, you actually don't "wind out" the steering wheel on corner exit, otherwise "The computer will think you're trying to go straight". Rather, he suggested that people trust to the system and hold your line out of the corner and just hammer it...the eLSD and TC systems would guide the car out.

That doesn't directly relate here, but it does provide some evidence that the torque vectoring of the eLSD is pretty influential on the car, and that steering position, like Travis suggested, is a pretty big input for that particular system.

It doesn't help, but I wonder what you'll find on the PDR recording.

[JANNETTYRACING]

Originally Posted by Mr. Wyndham

I did read something from Tadge (Corvette Engineer) speaking about PTM modes...he said that in race mode, in order to maximize the computer's help, you actually don't "wind out" the steering wheel on corner exit, otherwise "The computer will think you're trying to go straight". Rather, he suggested that people trust to the system and hold your line out of the corner and just hammer it...the eLSD and TC systems would guide the car out.

That doesn't directly relate here, but it does provide some evidence that the torque vectoring of the eLSD is pretty influential on the car, and that steering position, like Travis suggested, is a pretty big input for that particular system.

It doesn't help, but I wonder what you'll find on the PDR recording.

Thank you for your input, maybe you can alert Tadge of this problem

[ninetres]

Originally Posted by Mr. Wyndham

I did read something from Tadge (Corvette Engineer) speaking about PTM modes...he said that in race mode, in order to maximize the computer's help, you actually don't "wind out" the steering wheel on corner exit, otherwise "The computer will think you're trying to go straight". Rather, he suggested that people trust to the system and hold your line out of the corner and just hammer it...the eLSD and TC systems would guide the car out.

That doesn't directly relate here, but it does provide some evidence that the torque vectoring of the eLSD is pretty influential on the car, and that steering position, like Travis suggested, is a pretty big input for that particular system.

It doesn't help, but I wonder what you'll find on the PDR recording.

That’s retarded. The car can’t magically know the proper angle of every corner to “steer for you” during corner exit.

[Mr. Wyndham]

Originally Posted by ninetres

That’s retarded. The car can’t magically know the proper angle of every corner to “steer for you” during corner exit.

No, it doesn't. It does, however, use the eLSD to compensate for oversteer as you begin to apply throttle mid-corner to corner exit.

But if you turn the wheel off of the turn at that point, as good drivers will to compensate on their own and use that little bit of slide to their advantage...the car's systems will think you're beginning to accelerate straight (according to Tadge on the 'Vette)...What he's suggesting could actually result in higher corner exit speeds.

Pretty clever, but it would take a lot of getting used to for intermediate and pro drivers...and of course, not written in the manuals, anywhere.

[tomster]

Originally Posted by Mr. Wyndham

No, it doesn't. It does, however, use the eLSD to compensate for oversteer as you begin to apply throttle mid-corner to corner exit.

But if you turn the wheel off of the turn at that point, as good drivers will to compensate on their own and use that little bit of slide to their advantage...the car's systems will think you're beginning to accelerate straight (according to Tadge on the 'Vette)...What he's suggesting could actually result in higher corner exit speeds.

Pretty clever, but it would take a lot of getting used to for intermediate and pro drivers...and of course, not written in the manuals, anywhere.

Going from a 13 ZL1 to the 18 ZL1 1LE I can truly say I feel the rear diff working. I notice it mostly mid corner off. It's does take time to get used to it.

When you start to apply light throttle mid corner the car rotates a lot more so than my 13. Then as you power out there is much less drama. It actually pushes little. This rotation is actually causing me to early apex and then I run out of track/road on exit. The fix seems to be drive it in to the corner harder with more speed and apex later LOL.

I haven’t played with the rear bar yet. I want to get some consistent times as is. Then I'll take one track day and try the rear bar adjustment in all 3 positions to see what style best suits me. My guess is i am going to want it stiffer to make the car a little looser... I like the drama on corner exit!

Sorry to here about the trouble you are having with your car Ted. I thought for sure it was a tire problem... I wonder if you can put a couple GoPro's under the car and watch to see if one of the tires are toeing in when you get on it. A pull left would meen the driver rear tire is toeing in, or the pass rear is toeing out...

[Jmueller]

I’ll fully admit that since I have had the at for almost a year that I have somewhat gotten used to the skating rear end feeling when hammering it at around 50-60mph. I don’t like it though. But, I just stay in the throttle and it works out. It does feel like the elsd is doing something to compensate for whatever is going on.

[Bx Tpr]

Originally Posted by JANNETTYRACING

Do you still have the car, can you test it again to verify same problem.

Ted.

It happens every time I go WOT on the interstate. I'm fighting the steering wheel left and right and the car just keeps moving left.

[Koldunic]

Just saw the threads.

That’s frightening! Really dangerous!

And it looks frequent. I hope it’s not generalized.

[ninetres]

Gentlemen, it’s time I make an admission, as that’s the first step towards recovery. I too suffer from the strange rear end float in my ZL1 at higher speeds going WOT. I used to write it off to the crowns on country roads I would usually do a spirited pull on....but it happens on the flat freeways as well. Mine seems to kinda wobble left to right a few inches back and forth.

My passengers haven’t said anything but I wonder if they are EXTRA white knuckled. I’m sure they feel it.

[JANNETTYRACING]

Update, went to the dealer this morning and took the Service manager out and showed him what it is doing, He was Freaked out by it.

So we took an Identical new car out and it went perfectly straight under the same test.

They have a call in to a GM Chassis specialist that has the case on his desk.

Now the waiting game begins.