Launch Control Issues
Thread Starter
Navigator
Joined: Mar 2014
Posts: 9
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Launch Control Issues
Hey all,
I am trying to trouble shoot a perceived problem with my launch control on my Z51 manual stingray.
After reading up and witnessing it at spring mountain, it seems like most people are getting times roughly in the low 4s when using this feature. My best run time is around 6.2 seconds. I'm trying to figure out if there's an issue with my car, or if this is typical of other people's experiences.
Here's a video of me running tonight, tires were plenty warm. This was a 6.2 run (might have lost a bit from forward rolling as the ground was ever so slightly tilted). It seems to be allowing far more wheelspin then I've seen in other Launch control vids. You can see it struggling to get traction for aobut 2.5 seconds. Once it hooks up it's off!
Clearly it's likely faster overall with a skilled driver doing it manually, but I'm trying to get opinions if this is an issue or not before taking it in. I'd rather not have the techs test my launch control...
I am trying to trouble shoot a perceived problem with my launch control on my Z51 manual stingray.
After reading up and witnessing it at spring mountain, it seems like most people are getting times roughly in the low 4s when using this feature. My best run time is around 6.2 seconds. I'm trying to figure out if there's an issue with my car, or if this is typical of other people's experiences.
Here's a video of me running tonight, tires were plenty warm. This was a 6.2 run (might have lost a bit from forward rolling as the ground was ever so slightly tilted). It seems to be allowing far more wheelspin then I've seen in other Launch control vids. You can see it struggling to get traction for aobut 2.5 seconds. Once it hooks up it's off!
Clearly it's likely faster overall with a skilled driver doing it manually, but I'm trying to get opinions if this is an issue or not before taking it in. I'd rather not have the techs test my launch control...
Team Owner
Joined: Nov 2007
Posts: 45,265
Likes: 8,542
From: Rochester, NY
Difficult to tell from the video but it did not sound like you let the revs settle after you initially floored it. If that were the case than it is possible launch control was never engaged.
In almost all runs times are faster without the launch control. I have seen other videos where drivers were getting terrible times with it on.
I doubt anything is wrong with your launch control.
In almost all runs times are faster without the launch control. I have seen other videos where drivers were getting terrible times with it on.
I doubt anything is wrong with your launch control.
Thread Starter
Navigator
Joined: Mar 2014
Posts: 9
Likes: 0
Difficult to tell from the video but it did not sound like you let the revs settle after you initially floored it. If that were the case than it is possible launch control was never engaged.
In almost all runs times are faster without the launch control. I have seen other videos where drivers were getting terrible times with it on.
I doubt anything is wrong with your launch control.
In almost all runs times are faster without the launch control. I have seen other videos where drivers were getting terrible times with it on.
I doubt anything is wrong with your launch control.
Team Owner
Joined: Nov 2007
Posts: 45,265
Likes: 8,542
From: Rochester, NY
You are correct what I am saying is when you floor it the launch control will set the revs at 3 or 4 grand not certain, and it sounds like you took off before this occured. I could be 100% wrong very difficult to tell from your video.
Thread Starter
Navigator
Joined: Mar 2014
Posts: 9
Likes: 0
Here's a question: does the PTM mode affect traction? I was in Race. Would something like sport 1, sport 2 etc... affect how much slip Launch control gives it?
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Thread Starter
Navigator
Joined: Mar 2014
Posts: 9
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This car is a manual, so the process is: hold down clutch pedal, floor gas (in any PTM mode) then let the clutch out fast and keep it straight until you shift to second.
PTM modes are for Z51 cars only and are subsets of track mode. For example:
Wet
Dry
Sport1
Sport2
Race
My question is if any of these affect LC or if they are all the same.
PTM modes are for Z51 cars only and are subsets of track mode. For example:
Wet
Dry
Sport1
Sport2
Race
My question is if any of these affect LC or if they are all the same.
Advanced
Joined: Sep 2011
Posts: 72
Likes: 0
This car is a manual, so the process is: hold down clutch pedal, floor gas (in any PTM mode) then let the clutch out fast and keep it straight until you shift to second.
PTM modes are for Z51 cars only and are subsets of track mode. For example:
Wet
Dry
Sport1
Sport2
Race
My question is if any of these affect LC or if they are all the same.
PTM modes are for Z51 cars only and are subsets of track mode. For example:
Wet
Dry
Sport1
Sport2
Race
My question is if any of these affect LC or if they are all the same.
Melting Slicks
Joined: Nov 2013
Posts: 2,048
Likes: 28
From: Palm Beach County FL
I don't think you're doing anything wrong. I do hear the revs stabilize. I can tell you I hold at launch RPMs for alot longer than you do though. I've seen it adjust a bit. (go upto 4200 then slowly work down to 3700)
I have no idea what methodology it uses for this. I kinda wish we could adjust what RPM we wanna launch at like the mustangs. Maybe have 'automatic' and then manual, and let it adjust in 100 RPM increments.
I have no idea what methodology it uses for this. I kinda wish we could adjust what RPM we wanna launch at like the mustangs. Maybe have 'automatic' and then manual, and let it adjust in 100 RPM increments.
Melting Slicks
Joined: Nov 2014
Posts: 2,204
Likes: 17
From: Fayetteville North Carolina
St. Jude Donor '15
Just watched the video, sounds perfectly normal to me. You can hear the modulation in the exhaust as the traction management is working and it held back power until the traction was there.
I would call that normal. Your comparing of published or "best" 0-60 times to what you just did is naive. That's simply not the way it works, turn all that crap off and practice and you can get a really good time.
I would call that normal. Your comparing of published or "best" 0-60 times to what you just did is naive. That's simply not the way it works, turn all that crap off and practice and you can get a really good time.
