View Poll Results: Have you experienced unexpected power loss at low speeds with the 6th Gen ZL1? | |||
Yes, I feel there is an issue with the car's ability to take off gently and/or launch. | 104 | 64.20% | |
No, the car seems fine to me. | 26 | 16.05% | |
I do not own a 6th Gen ZL1. | 32 | 19.75% | |
Voters: 162. You may not vote on this poll |
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08-18-2017, 11:42 AM | #281 |
Drives: Lexus, ZL1 1LE, Ducati, Suzuki, Join Date: Jul 2017
Location: inverness, florida
Posts: 154
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I have had my ZL1 1LE for a month or so now and I keep the computer traction control disengaged most of the time.
I have found the launching in first gear at normal driving sensitive in that I need to have 1500 rpm and release the clutch moderately in speed to prevent bogging it down or it stalling which happened twice to me in the first week. Otherwise I have not experienced any problems. When I want throttle its there and can break the wheels loose as I don't use traction control. I absolutely do not understand the wheel slip gauge that I can have on the display. It will show a % of wheel slip and I know there is no wheel slip happening. |
08-18-2017, 11:56 AM | #282 | |
Drives: '17 ZL1 Join Date: Jul 2016
Location: Fairmont, WV
Posts: 1,558
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Quote:
The answer to your Wheel Slip % gauge question is explained in the attachment in post #97. In a nutshell, it's a small amount of error in the sensors, tire circumference, etc. that leads the computer to believe the back tires are spinning faster than the fronts. Since it's a percentage, it doesn't take much error to generate a big spike on the gauge. Imagine the tires moving at a rate of 0.1 MPH, and a sensor error on the rear tires of +0.1 MPH. That would show as a 100% slip even though it's only 0.1 MPH off from actual. This is why the gauge appears to going crazy at really low speed. It's simply giving visibility into the sensor error that's negligible any other time. |
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08-21-2017, 10:44 PM | #283 |
Drives: 2016 Join Date: May 2017
Location: Northern California
Posts: 314
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I haven't read this thread, but on the Corvette side Tadge and an engineer explain the elsd and the display. I have no idea if this will help or not, maybe some of you will find it interesting.
https://www.corvetteforum.com/forums...d-display.html |
08-22-2017, 08:37 AM | #284 | |
Bring It
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2017 Camaro ZL1 M6 - Everything but the sunroof - Sold 2010 Camaro SS - 650RWHP Daily Driver - Traded |
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08-22-2017, 12:48 PM | #285 | |
Drives: N/A Join Date: Jan 2016
Location: Houston
Posts: 167
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Quote:
“When we calibrate eLSD, we work in units of torque. 100% corresponds to 2000 Newton-meters (1475 ft-lbs) of break-away torque (every 1% is 20 Nm (14.75 ft-lbs)). Said another way, while holding one wheel stationary it would take 2000 Nm of torque on the other wheel to make the clutch between the two wheels slip if the display read 100%. For reference a C6 mechanical differential clutch pack was roughly 120 Nm (88 ft-lbs). The actuator is very quick to respond and is able to change from open to locked (0 to 100%) 150 ms (.15 sec) in order to respond to any dynamic situation.“ “Bleed events. The actuator needs to bleed small amounts air out of the hydraulics every few keys cycles to keep things operating consistently. As a driver you may see a couple of spikes to 100% at very low speeds while going straight. This is totally normal and can only happen in a relatively small range of steering on-center so you won't feel it in tight parking lot maneuvers.” “Wheel Slip percentage on the bottom of the display: The important thing to know here is that this slip display is not directly connected to the eLSD software. This wheel slip display has its own calculation and it's showing the average rear wheel slip compared to the average front wheel slip. It's not showing how much slip is occurring across the eLSD clutch (between the two rear wheels), even though I can see how a driver could make that connection. ` Think about this as showing how much rear wheel spin you're getting at the drag strip in a burn-out box, for example.” https://www.corvetteforum.com/forums...d-display.html Great, informative read that was answered a few days ago! Awesome find.
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Modded 99 Z28 - Gone
Last edited by ELS1; 08-22-2017 at 01:05 PM. |
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08-23-2017, 08:24 AM | #286 | |||
Track > 1/4 Mile
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For those interested about eLSD and what it's displaying Tadge (engineer for Corvette) answered that question last week on the Corvette Forums. I'm sure the eLSD display is very similar in both the Corvette and Camaro.
https://www.corvetteforum.com/forums...d-display.html Quote:
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08-29-2017, 04:50 PM | #287 |
Drives: '17 ZL1 Join Date: Jul 2016
Location: Fairmont, WV
Posts: 1,558
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The control tec device was installed in my car this morning. I captured a few events by taking off slowly in a paved parking lot with some very fine gravel (to trigger a small amount of wheel slip). The car nearly stalled a couple times, so hopefully that'll be some good data for the engineers.
Tomorrow it's supposed to rain in my area. I don't like to drive my car in the rain, but I might take it out for a short trip because the problem is very easily reproduced with a little water on the road. The control tec is scheduled to be removed Friday morning (September 1st). Hopefully, we'll hear back from GM within a couple weeks. |
08-29-2017, 05:14 PM | #288 | |
Bring It
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Quote:
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2017 Camaro ZL1 M6 - Everything but the sunroof - Sold 2010 Camaro SS - 650RWHP Daily Driver - Traded |
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08-29-2017, 07:57 PM | #289 |
Drives: '17 ZL1 Join Date: Jul 2016
Location: Fairmont, WV
Posts: 1,558
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08-30-2017, 04:23 AM | #290 |
Drives: 2017 ZL1 Nightfall Convertible M6 Join Date: Nov 2016
Location: Saskatchewan
Posts: 276
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08-30-2017, 07:05 AM | #291 |
Drives: 2019 ZL1-1LE A10 Join Date: Jan 2017
Location: Oklahoma
Posts: 512
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Thanks for working on this. As the data is captured, it is transmitted to the GM Engineers in real time. They should already have the data. The more times you push the "capture button", the more data they will have to look for common anomalies. It is just a matter of them going over it and reaching a conclusion. Hopefully the drivability and launches are both related and a simple software update will fix the issue.
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19 ZL1-1LE A10
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08-30-2017, 10:58 AM | #292 |
Drives: Slow Join Date: Mar 2016
Location: Baton Rouge
Posts: 669
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Forgive the conspiracy theory-esque wording of what I'm about to say but I have a question for all.
Does anyone think this was done not to save the clutch or driveline parts more so than it was to make the a10 look that much better on paper? And that in an effort to do this, compromised safety/driveability aspects in addition to performance? A c6 zr1, c6z and 5th gen zl1 all allow for up to 4K rpms on their launch control too but when the clutch is disengaged, it seems as though the car doesn't fall down as hard. Rpms fall to about 2500-3000 and power is cut to counter wheelspin obviously. A quick glance at the fast list shows the a8 is .2 quicker in the 1/4 so far than the m6, with one member pointing out that the fastest m6 passes were in +da and the 11 sec a8 passes were in -da. But let's just assume everything were equal and there really is a .2 difference, why would there be a greater contrast between the ss times and zl1 times? It seems as though the ss tq management is less invasive. Could that be bc the a8 wasn't quite as hyped up as the a10 was? As a consumer, it was only when I really started to look at trading my my c6 on an ss did I see this new 8 speed and looked specifically into it. I knew dodge had them and I wasn't even in the market for one of those at that time. Perhaps that's just the differences in marketing strategies between the two. I also understand that the a8 and a10 are different transmissions but the m6 in the zl1 is also different than the ss variant with closer ratios. So if the difference lies solely with the a8 to a10 transition, we could assume then that when a10 ss camaros (if that ever happens) hit the streets, they'll be seeing some 11.6-11.7 times under similar conditions and the average pass would be a high 11. Just a thought. What do you guys think?
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2017 Camaro ZL1 |
08-30-2017, 12:04 PM | #293 |
Life's Short, Live Fast!
Drives: 2017 Hyper Blue A10 ZL1 Join Date: Nov 2016
Location: London, KY
Posts: 2,015
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I think it all boils down to the higher first gear ratio in the M6 ZL1 and trying to protect the clutch because of that and the added power of the LT4. If Chevy was solely trying to make the A10 look better on paper, they would've claimed a faster 1/4 ET, such as the 11.1 that Al O. told us about at Camarofest. He said they had managed an 11.1 with it, but chose the 11.4 because it would be something the owners could more easily achieve.
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Life's Short, Live Fast! https://youtu.be/rTUv2p4T7OA 10.94 at 128 mph, 11.13 at 127mph 870 DA, https://youtu.be/e_X_LcpFp50 11.19 at 127mph 1100 DA, https://youtu.be/OXQiCQdQuH4 11.40 at 125mph 1800 DA
https://youtu.be/uWba1qs8M6Q 11.52 at 123mph 3500 DA TZQPHG '17 ZL1 HBM|A10|Nav|PDR|CFW Hood|ZL1 Mats 12/26/2016 Ordered! 2/8/2017 Built!! 3/2/2017 Brought Home!!! |
08-30-2017, 01:05 PM | #294 | |
Drives: Slow Join Date: Mar 2016
Location: Baton Rouge
Posts: 669
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That's also a very good point too as far as et's but, like you said, they're trying to be more realistic with their times. I've read where GM claims their times on corvettes and camaros on unprepped surfaces....which would tie into your point of a realistic time. So you could say they'd do the same for the m6 too, which still wouldn't matter since if they could knock off .3 just by running on a prepped surface in the auto, you could also do it with the manual, which cal has almost already demonstrated exactly with his m6 zl1, knocking .2 off what GM claims.
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2016 Toyota 4Runner
2017 Camaro ZL1 |
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