[ASKED] Explanation of Launch Control

[zadjaliz]

+1 Unfortunately this issue made me buy me something other than the ZL1.

I'm now a happy Z06 owner

[Infern0]

Originally Posted by zadjaliz

+1 Unfortunately this issue made me buy me something other than the ZL1.

I'm now a happy Z06 owner

The response to this issue from GM, including a non-response, will determine if I keep mine I think. This wears on me more and more each day. What I'm wondering though, if the launch/bog issue wasn't present, but the car was only capable of achieving what it does with the bog, would that then be an issue for me or if it's only the perception that something is missing that is causing me (us) stress...

[travislambert]

Originally Posted by zadjaliz

+1 Unfortunately this issue made me buy me something other than the ZL1.

I'm now a happy Z06 owner

The Z06 is an excellent choice! Lots of accessories, front camera, optional carbon ceramic brakes, optional competition seats, and many interior and exterior style/color options. The only downside I see is the cost, but the recent incentives make it hard to overlook.

Since the '18 ZL1 1LE I was going to buy arrived with quality issues, I'm back in the market for another car. I'm certainly considering a Z06 especially after the recent factory upgrades. I have read that the paint quality is much better.

[seanblurr]

If we can get this question geared towards the launch issue in the ZL1, as in, simply leaving a stop sign or light, I would be greatly in support of it.

[Sublime ZL1]

+1

[PinHead]

Originally Posted by midas@bellnet

I purchased my Zl1 because I wanted a car I could drive comfortably on the street but still have fun at the track. I love the car on the street (I am not a street racer), I think would be tremendous on a road circuit, but it is disappointing on a drag strip. When I looked into this car in the summer of 2016 it was advertised as being a good drag car, perhaps the A10 is but the M6 is not. In stock trim my best time was a 12.06 at 118 MPH 2.21 60 foot. Up until the mid 90's I was a devoted drag racer I raced everything from Pure Stock in the 60"s to IHRA PS in the early 90"s, my all of my cars will exceptionally fast of of the lone, in IHRA PS trim I could run consistent one 0"s, in NHRA PS trim consistent 1.07's in the late 80's and early 90's. I am 73 years old now and bought this car to have some fun on the street cruising and taking to the drag strip, I have modified the car a bit and have 652 RWHP and 658 foot pounds of torque, in this trim my best time is 11.72 at 130.56 MPH, with a 2.35 60 foot time, my time in the 1/8
mile equates to a 12.50, from 660 to 1320 my time equates to a high 10. I have purchased a HP Tuner Suite and written a few custom SCAN Logs, it is winter where I live (GTA Ontario) but come spring I am going to fix this problem with or with out the help of GM. Will keep you posted, I want to enjoy the car at the track before I am to old to drive it. If Al is reading this post, I have been driving for 57 years have owned nothing but GM product, mostly Chevrolet's, probably owned or influence the purchase of 100 vesicles (I owned my own business and controlled the purchase of all company cars), so Al please help us.

Welcome Mr. Midas and Happy New Year,

I too am a life long NHRA Racer/GM Engine/GM Chassis Builder and I echo your VERY VALID SENTIMENTS.

I didn't spend $80,000 to have a differentially lagging launch between the "1LE EXTREME TRACK OPTIONED" Manual and Automatic version of the same Gen6 Camaro.

Obviously the Nurburgring Record Setting 1LE had ZERO Software issues right???

I hope someone at GM does the right thing.

P/H

[PinHead]

Originally Posted by travislambert

The Z06 is an excellent choice! Lots of accessories, front camera, optional carbon ceramic brakes, optional competition seats, and many interior and exterior style/color options. The only downside I see is the cost, but the recent incentives make it hard to overlook.

Since the '18 ZL1 1LE I was going to buy arrived with quality issues, I'm back in the market for another car. I'm certainly considering a Z06 especially after the recent factory upgrades. I have read that the paint quality is much better.

MY car arrives soon and if there are these outstanding QC issues I WILL INVOKE THE LEMON LAW and turn aroun and buy a Dodge SRT DEMON!!!

[2017-ZL1]

I'm in! +1

[clanky]

Got my vote

[TLSTWIN]

Bump for the next ask al

[CruzySS]

I'm assuming the "Bogging" for the m6 is so when people dump the clutch there isn't full power to the transmission and clutch. This can't be good for all the components. GM put this safety feature in trying to save on warranty work.

[travislambert]

Originally Posted by CruzySS

I'm assuming the "Bogging" for the m6 is so when people dump the clutch there isn't full power to the transmission and clutch. This can't be good for all the components. GM put this safety feature in trying to save on warranty work.

I really hate to keep beating this dead horse, but basically anyone with drag racing experience who has taken a Gen 6 ZL1 with the M6 to a track will agree this car has a problem that goes beyond any drivetrain protection mechanism.

Surely the M6 Z06 would have similar warranty/drivetrain protection concerns, and that car clearly does not have the same problem.

The fact that the A10 runs the 1/4 mile almost a second faster is also a pretty good indication of a problem. Wouldn't GM want to protect the A10's drivetrain too?

Obviously the A10 is expected to perform much better on the strip, but come on. The difference between these two configurations is excessive. A good driver with an A8 SS will consistently beat an excellent driver with the M6 ZL1 on the strip. And that's with nearly 200 less horsepower!!

Also, in order for this to truly be a beneficial drivetrain protection mechanism at work, it'd need to somehow reduce the shock on the drivetrain when the clutch is released. However, this isn't what happens. The clutch is released, the surge of power passes from the engine to the wheels and THEN the engine boggs. At this point the damage is done.

IMO, the "bogging" happens when the car is trying to help the driver maintain control. Unfortunately, it's tuned poorly. The car seems quick to remove power. When it removes power, it removes too much... And then, it's very slow to give the power back.

Also, I believe the fact that GM is using a PERCENTAGE for their wheel slip metric is working against them at very low speeds...i.e., when launch control is needed most.

Sorry for the rant, but I don't believe for a minute this was intentional. If it were intentional GM's advertised 1/4 mile time for the car would be calculated accordingly. In its current configuration, it's nearly impossible to achieve the advertised 11.8 in the M6 ZL1.

[VcrusaderV]

+1. I’m doing everything right but it boggs and shudders instead launch. Even if I try to keep the RPMs up it will pop and backfire. Getting desperate.

[UserNameNotFound]

This is so annoying to have to deal with on a daily driver!

Any progress from GM?

It is not just a track issue, it is also a safety concern as the car boggles down every time you stop on traffic or at a stop light.

People might thing I am trying to show off when RPM (uncommanded) spikes back up like I was a retarded kid driving his turbo Scooby! :-/