The 2014 Corvette Stingray Forum
News / Blog Register Social Groups Calendar Search Today's Posts Mark Forums Read

Go Back   Chevrolet Corvette Stingray C7 Forum > Members Area > Ask the Camaro Team

Reply
 
Thread Tools
Old 11-14-2017, 03:56 PM   #15
b0bsaget007
 
b0bsaget007's Avatar
 
Drives: 2016 2LT RS Blue Velvet
Join Date: Dec 2016
Location: Central FL
Posts: 145
Something's not right in the table, because my 2016 LTG does no-lift shifts on demand.
__________________

PC: i5-6600; RX 480 4GB; 16GB DDR4; Samsung 950 PRO 512GB SSD
Car: 2016 Camaro 2LT RS 2.0T 6M Blue Velvet Metallic | ZZP Hi-Flow Catted Downpipe | Injen EVO7300 Cold Air Intake
b0bsaget007 is offline   Reply With Quote
Old 11-14-2017, 04:11 PM   #16
L99BEN
 
L99BEN's Avatar
 
Drives: 2023 BMW M4 Competition
Join Date: Dec 2012
Location: USA
Posts: 657
3400 rpm for the LGT's Target RPM during shift cant be right..
__________________
2023 BMW M4 Competition (daily)
2022 ZLE M6 (weekend toy)
2022 BMW X3m40i

Past:
2022 Tesla S Plaid
2020 Shelby GT500 sold
2019 Hellcat Redeye-traded for new GT500
2019 ZL1 A10 - sold (meh)
2019 Tesla M3P
2016 Hellcat Challenger - A8 sold but never forgotten
2016 Camaro 2SS M6
2014 Mustang GT A6
2012 Mustang GT M6 "brembo" 3.73/FBO
2012 Camaro SS L99 (Wife's)
- slow
L99BEN is offline   Reply With Quote
Old 11-14-2017, 04:40 PM   #17
mjk3888
"M1SS1LE"
 
mjk3888's Avatar
 
Drives: 2017 SS 1LE
Join Date: Dec 2015
Location: Upstate SC
Posts: 2,906
Quote:
Originally Posted by samurai View Post
To get this clear, this is how it works?

e.g. on SS
-> 2nd Gear, reaching 5.500RPM
-> Pressing the clutch while staying on full throttle, the RPM raises to a maximum of 6400RPM
-> Going into 3rd Gear the active Rev Match get's the RPM to the optimum, so you can shift as fast as you can and release the clutch

Am I right?

Also: Is this feature included in european models?
The car holds the target RPM listed in the table above until you release the clutch.
__________________
mjk3888 is offline   Reply With Quote
Old 11-14-2017, 04:50 PM   #18
MR 45TH

 
MR 45TH's Avatar
 
Drives: 2018 ZL1
Join Date: Oct 2011
Location: Huntingtown, MD
Posts: 1,138
And now that question is FINALLY answered . Thanks for your time Al!
__________________
2018 ZL1…Many mods to come
MR 45TH is offline   Reply With Quote
Old 11-14-2017, 05:29 PM   #19
exxit
 
Drives: 2016 1SS D1SC Methfed Lowered Wrapd
Join Date: Apr 2016
Location: CA
Posts: 632
Quote:
Originally Posted by MR 45TH View Post
And now that question is FINALLY answered . Thanks for your time Al!
I dno how healthy this feature is for us boosted folks...

I imagine keeping the engine RPM steady while spraying meth can cause some interesting fuel mixture results. I may be completely ignorant and this may mean nothing but just a shot in the dark.
__________________
//2016 1SS M6 D1SC Upgraded IC 4.25 Pulley//
// Alky Control Meth Kit running 100% methanol //
(purchased from JDP, installed by True Bliss Customs, tuned by NewEraPerformance in Augora Hills)
// 3M/Gotch Design Sponsored Gloss Deep Space Colorshift Wrap //
exxit is offline   Reply With Quote
Old 11-14-2017, 05:51 PM   #20
MR 45TH

 
MR 45TH's Avatar
 
Drives: 2018 ZL1
Join Date: Oct 2011
Location: Huntingtown, MD
Posts: 1,138
Quote:
Originally Posted by exxit View Post
I dno how healthy this feature is for us boosted folks...
I was wondering the same thing. Since the ZL1’s have the same feature it’s obviously possible, just wonder what all may be different in the tuning of it.
__________________
2018 ZL1…Many mods to come
MR 45TH is offline   Reply With Quote
Old 11-14-2017, 06:12 PM   #21
vtirocz


 
vtirocz's Avatar
 
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,460
Quote:
Originally Posted by samurai View Post
To get this clear, this is how it works?

e.g. on SS
-> 2nd Gear, reaching 5.500RPM
-> Pressing the clutch while staying on full throttle, the RPM raises to a maximum of 6400RPM
-> Going into 3rd Gear the active Rev Match get's the RPM to the optimum, so you can shift as fast as you can and release the clutch

Am I right?

Also: Is this feature included in european models?
The NLS feature has nothing to do with Active Rev Match (which is only active when accelerator pedal is at 0%). Otherwise the sequence of events you wrote looks correct.
__________________
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.24 @ 115.9 mph
vtirocz is offline   Reply With Quote
Old 11-14-2017, 07:38 PM   #22
dpevans

 
Drives: 2024 Riverside Blue 2SS 1LE
Join Date: Mar 2016
Location: Fort Wayne, IN
Posts: 1,195
Well that really sucks, out of all the engine combinations the 2016 LGX doesn't have it. So sad.
dpevans is offline   Reply With Quote
Old 11-14-2017, 07:49 PM   #23
DGthe3
Moderator.ca
 
DGthe3's Avatar
 
Drives: 05 Grand Am GT
Join Date: Jul 2007
Location: Niagara, Canada
Posts: 25,372
Send a message via MSN to DGthe3
Quote:
Originally Posted by L99BEN View Post
3400 rpm for the LGT's Target RPM during shift cant be right..
No, it can't. Based on Al's explanation, you have to exceed the enable RPM for it to be, well, enabled. Since the enable RPM is listed as 4400 rpm it doesn't make sense for the target RPM to be 1000 lower. A thousand higher? Sure, a 5400 rpm target would make a lot more sense.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________
Originally Posted by FbodFather
My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors......
........and HE WOULD KNOW!!!!
__________________

Camaro Fest sub-forum
DGthe3 is offline   Reply With Quote
Old 11-14-2017, 07:50 PM   #24
vtirocz


 
vtirocz's Avatar
 
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,460
Looks like Fillys6 called it!

Quote:
Originally Posted by Fillys6 View Post
I just ran a test on my 2017 2SS M6, here's the video.

It is clear that RPMs INCREASE to a 6400RPM limiter, whereas the 1LE DECREASES in preparation for the next gear (see this thread http://www.camaro6.com/forums/showthread.php?t=503081).

If I were one of the engineers designing NLS, I would design it to work exactly like the 1LE video in order to reduce drive train shock. Having said that, I think I'm hitting the limiter

__________________
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.24 @ 115.9 mph
vtirocz is offline   Reply With Quote
Old 11-14-2017, 07:54 PM   #25
vtirocz


 
vtirocz's Avatar
 
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,460
Quote:
Originally Posted by DGthe3 View Post
No, it can't. Based on Al's explanation, you have to exceed the enable RPM for it to be, well, enabled. Since the enable RPM is listed as 4400 rpm it doesn't make sense for the target RPM to be 1000 lower. A thousand higher? Sure, a 5400 rpm target would make a lot more sense.
It's possible (very likely) the table is correct and that's just hysteresis built in to be closer to where the driver could re-engage the next gear if he shifted early. He does not list the target ramp rate (ramp rate down will be much slower than ramp rate up). Most anyone performing a NLS would just catch the next gear before the system has time to reach that apparent low target speed.
__________________
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.24 @ 115.9 mph
vtirocz is offline   Reply With Quote
Old 11-14-2017, 08:01 PM   #26
vtirocz


 
vtirocz's Avatar
 
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,460
Al,
I appreciate you and the team taking the time to provide us with that level of detail to answer the question. That really helps clear thing up! I will try this out again next chance I get.

Follow-up questions (if I may):
  1. Regarding this comment: "In Engineering terms, when triggered, there is an immediate torque control, with fuel and spark, for a given period of time. Then, a predictive control takes over using the throttle to control torque. This allows the driver to take advantage of fast torque control for a short period of time (e.g. during the shift) without heating up or damaging the catalyst over time." What's the max allowable time that the system can stay in torque control mode (throttle open, with fuel and spark controlling engine speed) before "predictive control" takes over and starts closing the throttle?
  2. What's the reason the SS and SS 1LE are tuned differently? Is it to ensure a smoother transition to the next gear (on the road course focused SS 1LE) at the expense of better acceleration potential (on the SS, with the inertia of the engine accelerating the car briefly as the clutch is released at the higher RPM)?

I agree with others that this level of detail should make it's way to the owner's manual or at least a performance supplement.

Again, thanks very much for the thorough answer!

__________________
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.24 @ 115.9 mph
vtirocz is offline   Reply With Quote
Old 11-14-2017, 08:03 PM   #27
DGthe3
Moderator.ca
 
DGthe3's Avatar
 
Drives: 05 Grand Am GT
Join Date: Jul 2007
Location: Niagara, Canada
Posts: 25,372
Send a message via MSN to DGthe3
Quote:
Originally Posted by vtirocz View Post
It's possible (very likely) the table is correct and that's just hysteresis built in to be closer to where the driver could re-engage the next gear if he shifted early. He does not list the target ramp rate (ramp rate down will be much slower than ramp rate up). Most anyone performing a NLS would just catch the next gear before the system has time to reach that apparent low target speed.
I think its way more likely to be a typo.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________
Originally Posted by FbodFather
My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors......
........and HE WOULD KNOW!!!!
__________________

Camaro Fest sub-forum
DGthe3 is offline   Reply With Quote
Old 11-14-2017, 08:08 PM   #28
vtirocz


 
vtirocz's Avatar
 
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,460
Quote:
Originally Posted by DGthe3 View Post
I think its way more likely to be a typo.
Only one way to find out... someone with an LTG needs to test it out.
__________________
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.24 @ 115.9 mph
vtirocz is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:27 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.