C7 Z06 Track Mode without selecting PTM?
09-21-2018, 01:12 AM
#1
C7 Z06 Track Mode without selecting PTM?
What track mode setting is used if the mode selector dial is turned to track mode without pressing the traction control button twice to select a PTM mode?
Last edited by rcgldr; 09-21-2018 at 10:34 AM.
09-21-2018, 12:04 PM
#2
Safety Car
Been discussed ad nauseam. Search engine is your friend.
Do a Search in the C7 Forum on the three words, "track mode PTM". You'll get 12 threads answering your question.
Do a Search in the C7 Forum on the three words, "track mode PTM". You'll get 12 threads answering your question.
Last edited by rikhek; 09-21-2018 at 12:04 PM.
09-21-2018, 04:56 PM
#3
I already did a search and found some of the threads. So far the answer seems to be that what you get by turning the dial to track and not selecting a PTM mode is "undefined", which is why I asked.
Last edited by rcgldr; 09-21-2018 at 04:57 PM.
09-21-2018, 05:00 PM
#4
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2020 Corvette of the Year Finalist (track prepared)
C7 of Year Winner (track prepared) 2019
On a private test day at the track I experimented with the PTM settings.
The behavior acts as though it's in the "dry" setting. I couldn't tell the difference between Dry and "nothing" selected in PTM.
Just my observation is all.
09-21-2018, 05:23 PM
#5
OK, after doing another search I found one post in one of the threads that stated turning the dial to track mode without selecting a PTM, sets the suspension to track mode / sport 1, but that traction control would be implemented using the brakes as opposed to cutting fuel, but the poster didn't mention where they got that information from. Some of the responses stated the result was "undefined", since for some of the parameters, the manual just states what is available without stating what the default setting is if a PTM mode is not selected. For example for both sport and track modes, the manual shows the ELSD is setup in "modes 2 & 3" (it's not clear to me what this means). For track mode, StabilityTrack shows as "Comp Mode Avail", and launch control and PTM modes show as "available". The manual seems to imply that a PTM mode needs to be selected to enable launch control, but I don't plan on using launch control or testing it.
Last edited by rcgldr; 09-21-2018 at 07:56 PM.
09-21-2018, 07:59 PM
#6
I looked at some of the threads, with some of the answers stating they didn't know what it does ("undefined"), or in this thread that it felt like PTM dry mode, and one post that suspension was set to sport 1 and traction control set to use brakes only without cutting fuel, but that post did not state where that information came from. So at this point in my search, I haven't found a clear answer with a reference to where this information can be found.
Last edited by rcgldr; 09-21-2018 at 08:00 PM.
09-22-2018, 01:23 AM
#8
https://www.corvetteforum.com/forums...post1592059127
Found this by typing "c7 modes site:corvetteforum.com" into google search
Found this by typing "c7 modes site:corvetteforum.com" into google search
So my best guess is from the earlier Ask Tadge answer for how the different PTM modes work. His answer notes that selecting a PTM provides information about the track surface (wet or dry) and implies that if a PTM mode is not selected, then the track surface condition is unknown and some tire spin is required in order to determine the conditions. However, this doesn't explain which of the 5 modes that track mode defaults to if selected without selecting a PTM, or if there's the equivalent of a 6th mode if track mode is selected without selecting a PTM mode.
Last edited by rcgldr; 09-22-2018 at 01:40 AM.
09-22-2018, 07:27 AM
#9
The owners manual doesn't make it clear what sub-modes are selected by turning the dial to track mode without selecting a PTM.
ELSD is noted as modes 2 & 3 for both sport and track mode, but there's no explanation for what those modes do or when mode 2 is used versus mode 3.
PTM is noted as available, but there's no mention of some default setting if track mode is selected without also selecting a PTM mode.
However, this doesn't explain which of the 5 modes that track mode defaults to if selected without selecting a PTM, or if there's the equivalent of a 6th mode if track mode is selected without selecting a PTM mode.
ELSD is noted as modes 2 & 3 for both sport and track mode, but there's no explanation for what those modes do or when mode 2 is used versus mode 3.
PTM is noted as available, but there's no mention of some default setting if track mode is selected without also selecting a PTM mode.
However, this doesn't explain which of the 5 modes that track mode defaults to if selected without selecting a PTM, or if there's the equivalent of a 6th mode if track mode is selected without selecting a PTM mode.
You can find info on the eLSD modes here. https://www.corvetteforum.com/forums...post1589482511. Here is the interesting part:
The eLSD is fully integrated with Electronic Stability Control and Performance Traction Management systems. Its calibrations vary among three modes, based on the Drive Mode Selector setting:
- Mode 1 is the default setting for normal driving and emphasizes vehicle stability
- Mode 2 is engaged when electronic stability control is turned off in the Sport or Track modes. This calibration enables more nimble turn-in and traction while accelerating out of a corner
- Mode 3 is automatically selected when Performance Traction Management is engaged. This calibration has the same function as Mode 2, but is fine-tuned to work with Performance Traction Management.
09-22-2018, 10:53 AM
#10
Thanks for the info. Since the manual shows modes 2 & 3 for sport mode, I assume that sport mode with electronic stability on is mode 3? (That would seem to conflict with the statement that mode 3 is fined tuned for PTM mode).
Last edited by rcgldr; 09-22-2018 at 10:54 AM.
09-22-2018, 11:35 AM
#11
Good question. My guess is that showing eLSD Mode 3 for Sport mode is an error in the manual and it should just show eLSD Mode 2.
09-22-2018, 12:01 PM
#12
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Like I have said before it is undefined. You can experiment and see what you can get but there is no way to know for sure. Not sure it is anything to waste time wondering about. The 5 modes that are defined provide excellent selections for people running their cars on the track.
Bill
Bill
09-22-2018, 05:27 PM
#13
Like I have said before it is undefined. You can experiment and see what you can get but there is no way to know for sure. Not sure it is anything to waste time wondering about. The 5 modes that are defined provide excellent selections for people running their cars on the track.
09-23-2018, 05:23 PM
#14
Safety Car
Like I have said before it is undefined. You can experiment and see what you can get but there is no way to know for sure. Not sure it is anything to waste time wondering about. The 5 modes that are defined provide excellent selections for people running their cars on the track.
Bill
Bill