Launch control or just dump it?
Thread Starter
Pro
Joined: Sep 2015
Posts: 558
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From: SW Kansas
Launch control or just dump it?
Which is most likely to give you the best results: Using the launch control as described in the manual or simply putting it into Sport or Track, revving to 3-4000 and releasing the brake? I've noticed that in using launch control as instructed by the manual that the engine will rev to 2000 RPM, then drop down to about 12-1300 before you release the brake. The car bogs a second and then takes off. Never have measured a 1/4 mile run but my 0-60 MPH are consistently 4-4.2 seconds. 2016 base car with A8.
Thread Starter
Pro
Joined: Sep 2015
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From: SW Kansas
Burning Brakes
Joined: Jan 2007
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Which is most likely to give you the best results: Using the launch control as described in the manual or simply putting it into Sport or Track, revving to 3-4000 and releasing the brake? I've noticed that in using launch control as instructed by the manual that the engine will rev to 2000 RPM, then drop down to about 12-1300 before you release the brake. The car bogs a second and then takes off. Never have measured a 1/4 mile run but my 0-60 MPH are consistently 4-4.2 seconds. 2016 base car with A8.
Safety Car
Joined: Jul 2011
Posts: 4,496
Likes: 1,209
From: Phoenix, Arizona
That said I eventually did try Launch Control. The M7 goes to about 3-4000 RPM which is much closer to red line. I was worried but thought if I didn't settle at around 4K I just might have enough time to lift my foot off the gas so as to avoid any red line and damage. And the car is supposed to cut off at red line anyway right?
Well it did work but I have not gotten to the point to trying to compare Launch Control vs. Human Launch Control.
Le Mans Master
Joined: Dec 2001
Posts: 5,706
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From: St. Peters MO
C7 of Year Finalist (stock) 2019
2018 C7 of Year Finalist
You can't overrev the engine. The computer cuts fuel flow at redline. Also, when shifting for best acceleration the C7 has "no lift shift" so you can keep the throttle floored when you shift and it won't overrev.
Thread Starter
Pro
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From: SW Kansas
Actually, over revving the engine is not my concern. Blowing the tranny or diff is.
Safety Car
Joined: Jul 2011
Posts: 4,496
Likes: 1,209
From: Phoenix, Arizona
In any event, a visual popup saying "Launch Control Engaged" would be welcomed...
Last edited by defaria; Apr 23, 2017 at 08:04 PM.
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Thread Starter
Pro
Joined: Sep 2015
Posts: 558
Likes: 245
From: SW Kansas
Launch Control with the A8 on a base car allows you to go off the line at 12-1400 RPM which results in a bog before it takes off. Can the driveline handle 3-4000 RPM with the idea it would decrease times for a given distance?
Last edited by Highplains; Apr 23, 2017 at 09:30 PM.
Intermediate
Joined: Mar 2017
Posts: 48
Likes: 16
From: Michiana
Here is video of launch control being demonstrated at Ron Fellows Corvette Owner's School last week in a M7 car.
Launch Control Demo
Launch Control Demo
Le Mans Master
Joined: Jan 2002
Posts: 5,892
Likes: 1,200
From: Ft. Myers FL
I've found in my experience that with the C7's to get best results with the automatic has been to stage, when the second stage light comes on firmly hold the brakes down & quickly floor & let off the throttle. This "flashes" the trans. Then watching the three yellow lights come down go on idle. You'l get a little wheel squeal but then it hooks. Just saying. 
Melting Slicks
Joined: May 2012
Posts: 2,904
Likes: 315
From: Cedar Falls Iowa
Launch control might work with DOT slicks, but watching the demo at Spring Mtn made it look kinda dumb. It revs too high for the regular tires. Too much driveline shock. If I launch the car, I'm gonna go from about 2500ish, and I feather it a little.
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
I'm not a fan of launch control especially the way they have it programmed. Too many steps to get it set up especially when you're at a drag strip that is quick to get cars lined up and released.
I just wish they had a one step launch control set up like a simple press of the center mode control button three (or four times) and it enters launch control mode rather then the current menu selection set up process.
I just wish they had a one step launch control set up like a simple press of the center mode control button three (or four times) and it enters launch control mode rather then the current menu selection set up process.
Burning Brakes
Joined: Apr 2014
Posts: 780
Likes: 176
From: MV CA
