Originally Posted by sdurg24

My 2011 GS with M6, F55, and NPP (with Mild to Wild remote) has been a terrific car for me and the best of the 3 Corvettes i have owned but......the Launch Control feature has never worked for me. Finally a dedicated tech (Tom) from McMulkin Chevy in Nashua, NH has solved the problem. This may have implications for other similarly equipped 2011 and 2012 Vettes. Seems the Mild to Wild control interferes with the communication with the Launch Control when in the "loud" mode. In my GS the default mode of the Mild to Wild switch is in the loud mode whenever I start the car. In order to get to the quiet mode I have to press the remote. This is just fine with me as I love the sound and can make it quiet whenever I want. Little did I know that by using the Mild to Wild in the loud mode I was over riding the ability of the Launch Control to be set in motion since it can only work in the factory default quiet mode (which automatically goes to loud mode after about 3,700 RPM). Who woulda thunked it? Seemed to me that the loud mode made more sense for rapid accelleration but in acuality the RPM's rise over the 3,700 level when Launch Control is used. I haven't had the opportunity to test it out as I just beat the latest snowstorm back to the garage where my GS will spend most of the upcomming NH winter but I recently came back from Bob Bondurant School where I had the opportunity to try out the Launch Control several times on a new ZR1. Can't say enough about the ZR1, Bondurant, and especially Tom the Tech from McMulkin.

Originally Posted by mjcourt

, I went to Bondurant last June and they never had us use LC. I wish they had. School was great though.

Originally Posted by sdurg24

My 2011 GS with M6, F55, and NPP (with Mild to Wild remote) has been a terrific car for me and the best of the 3 Corvettes i have owned but......the Launch Control feature has never worked for me. Finally a dedicated tech (Tom) from McMulkin Chevy in Nashua, NH has solved the problem. This may have implications for other similarly equipped 2011 and 2012 Vettes. Seems the Mild to Wild control interferes with the communication with the Launch Control when in the "loud" mode. In my GS the default mode of the Mild to Wild switch is in the loud mode whenever I start the car. In order to get to the quiet mode I have to press the remote. This is just fine with me as I love the sound and can make it quiet whenever I want. Little did I know that by using the Mild to Wild in the loud mode I was over riding the ability of the Launch Control to be set in motion since it can only work in the factory default quiet mode (which automatically goes to loud mode after about 3,700 RPM). Who woulda thunked it? Seemed to me that the loud mode made more sense for rapid accelleration but in acuality the RPM's rise over the 3,700 level when Launch Control is used. I haven't had the opportunity to test it out as I just beat the latest snowstorm back to the garage where my GS will spend most of the upcomming NH winter but I recently came back from Bob Bondurant School where I had the opportunity to try out the Launch Control several times on a new ZR1. Can't say enough about the ZR1, Bondurant, and especially Tom the Tech from McMulkin.

Originally Posted by Joe_G

Originally Posted by Fort Rucker

It starts in the loud mode even if it's in the quiet mode when you shut it down? Mine does not work this way. If I shut my car down in the quiet mode then it's still in the quiet mode when I start the car again. It stays in whatever position it was in when the car is switched off.
But mine is a Z06, so maybe it's different from the GS?

Originally Posted by Stevenyc777

Let me get this straight .you have to keep the m to w switch in the quite mode for the l.c. to work??

Originally Posted by redzone

The only thing the LC is good for is not having to worry about banging off the rev limiter during the inevitable smokey burnout. At least,that was my experience with it on a GS on two seperate occasions. Haven't tried it on a Z06/ZR1.

Originally Posted by sdurg24

Red, I'm not trying to imply that Launch Control is better on a dragstrip than a good driver. That would be up to some controlled test where LC is used 10-20 times and measured against a known good driver in the same car 10-20 times as well. I can't even say that it is useful on my GS as I haven't had an opportunity to try it out due to the cold weather and snow here in the "Live Free or Die" state of NH. However I can say that for a non dragster who doesn't get to launch a car with a manual transmission from zero to whatever under full power very often, that the ZR1 I used at Bondurant was absolutely spectacular in putting the power to the wheels without having to worry about hitting the rev limiter during the actual launch or having excessive wheel spin at the friction point of the clutch. The Launch Control feature gave me a perfect takeoff every time. Maybe a pro could have done better but Little Ole Me could not and that to me is the point of LC. I hope my GS will do the same and to be honest with you I can't see why it won't since it is essentialy the same computer controlled system.

Originally Posted by Torchsport

Thanks for that info.

I too got to enjoy using launch control on a Bondurant ZR1.
I have learned that Spring Mountain wont allow this.
Bondurant ENCOURAGED us!

Originally Posted by barduch

I tried the launch control after the break in period on my ZR1 and it seemed a bit "violent" for lack of a better description. The car shook and shuddered to the point of feeling like it was indeed not healthy for the driveline. It felt as though the spark to the cylinders was being interrupted as the car popped and hopped a bit. I still don't understand exactly how it works or if it is a combination of engine control and brake application to inhibit wheel spin. I assumed that my technique was flawed and had hoped to get a proper demonstration at Spring Mountain. :

Originally Posted by jschindler

I'll be interested to see if this really fixes the problem or not. I can't wrap my head around why that would cause it to not work, but I do admit that today's cars have very strange electronics and many functions are intertwined.

Originally Posted by Joe_G

It's not even close....even a bad driver can do better at the drag strip. Taking off from idle at the drag strip does better. This is based on my observations of a few Grand Sports at PBIR.

Well I should qualify that...if you're such a bad driver that you don't know what to do and incur uncontrolled wheel spin to redline, then yes, launch control would be better.

The question if you should even be at a drag strip if you can't control wheelspin any better than that is beyond the scope of this discussion.

Originally Posted by sdurg24

Well, I guess that means there is no room for discussion and further tests would be a waste of time to determine whether or not Launch Control is at all effective. Since this is above my pay grade and since the engineers at Corvette are obviously total incompetents I'm at a loss for words. GEEZ and

Originally Posted by redzone

The only thing the LC is good for is not having to worry about banging off the rev limiter during the inevitable smokey burnout. At least,that was my experience with it on a GS on two seperate occasions. Haven't tried it on a Z06/ZR1.

Originally Posted by CO Lightfoot

In the interest of full disclosure () let me say upfront that my 09 C6 doesn't have Launch Control; I haven't tried LC (but would like to); I never race my C6; and, I haven't drag-raced any car in many years.

That said, I think there are some good uses for LC on a drag strip.

-- Do certain mods really make a car quicker & faster? LC provides a consistent performance-testing technique... sux when your new cold-air intake doesn't make any difference.

-- Seems like LC would be great for bracket racing. Although, it also seems like a bit of a cheat... I'd rather win based on skill & luck.

-- Trying LC for the first time sounds like fun. Certainly I'd expect experienced and/or talented racers would want to try it (like you did), if only out of curiosity to see how it behaves. But I doubt they'd use it regularly -- too boring, where's the challenge, I can go faster without it, etc.

-- LC provides a baseline ETA/MPH... if an experienced and/or talented racer can't beat LC, maybe they aren't as experienced and/or talented as they think.

Actually, according to testing by Car & Driver, using LC doesn't make much difference for the ZR1.


http://www.caranddriver.com/features...tested-feature


To the OP: Definitely keep us posted on whether or not the M2W keeps your LC from engaging.

Originally Posted by JL1981

Can a diablosport tune cause interference with my 11 Grand sport's launch control? I had an incident earlier today after I installed the standard diablosport performance 93 octane tune. I attempted to use the launch control, but once the GS launched it would not rev past 4500 rpm in 1st, 2nd, or 3rd gear. Not sure what to make of this?