Originally Posted by racezx9

I have the C6 Z06, look at the weight of the car from 06 to carbon edition it went up !!! Because they added things the market wants, the crappy interior had to be improved, the snap to death behavior at the limit had to be changed. The new car has a better frame a better drive train, better transmission, better technology across the board....do you even own a vette, or can afford the, have you actually lived with one for any period of time a C6, a C5...what do you actually own or do you live in your parents basement and pretend. You want light weight buy a Miata !!

Originally Posted by Leadfoot01

Yeah--the car sucks. Highest lateral G readings (1.17-19) ever tested on a road car. Best braking ever recorded from 70mph by C&D on a road car. Ecstatic reviews by those that have actually DRIVEN the car. Runs a 1:29 out of the box at RA and then you drive it home listening to a 10 speaker Bose stereo with your seats on cooling while surfing the Internet on 4G wifi. Then getting home and downloading all the PDR data from your day at the track. I mean, WHO would want this POS?!?!
I hope all the people so negative on the car DON'T buy one so those of us that have can enjoy a little more exclusivity during our ownership experience.

Rant over! I'm new to the corvette world so maybe I don't know any better, but I can't believe the amount of BS that gets posted on this forum.

Originally Posted by JMB

I keep hearing everyone talk about heat soak and we all know how this can be detrimental to performance but could this item below explain why the car still has more potential...did they actually fill this vehicle with 91 octane or is this a misprint (hard to handwrite something in error as opposed to a typo!).

Originally Posted by TripleBlack99

looks like the author of that article got a response from gm:

We’ve contacted GM to ask them about the reason behind the shy ECU setup and we’ll be back with an update as soon as we have an answer.

Update: GM has responded, explaining the reasons behind the ECU setup reigning over the LT4 V8. To put it shortly, Chevy wants to make sure the Z06 meets emission targets and keeps placing those 650 ponies at the mercy of your right foot for at least 10 years or 100,000 miles (160,000 km), which are the intervals covered by the warranty.

To use the automaker's words: "We are confident that the vast majority of customers are going to be more than satisfied with the performance the Z06 offers in stock form. For those that want more power, they can visit an aftermarket tuner – who are not held to the same standards [emissions and warranty] as an OEM. However, this presents significant risk to the customer. An aftermarket tune voids the vehicle warranty as Chevrolet cannot possibly test or confirm the durability of their calibration; and aftermarket calibrations could cause drivability issues that are not present in the factory setting."

When asked about a possible track tune, that would unlock some extra potential for limited amounts of time, GM said they are not planning such a move.

Basically, GM acts like a father who's giving you a car - it hands you the keys and whether you want to enjoy the supercharged thrills in marathon or sprint mode, the choice is yours. It's just that you must remember to cover your dad's 100 grand pension fund in return, on the spot.

Originally Posted by ChucksZ06

Some of the most pathetic, overrated cars you will come across at a track day. No power, poor brakes, mediocre cornering, talk about ignorant comments.

Originally Posted by rsalco

Especially poor brakes. First thing changed by an M owner who tracks regularly. Most however simply tour the courses.

Originally Posted by DerStig

I'm just appalled to hear this. Unbelievable. I understand their reasoning, but the limits at which this is happening is just way too low. They need to increase the threshold. I cannot believe I have to run the risk of voiding my 100k car's warranty to properly enjoy it. I think this is nothing but advertising deception on GM's part.

Originally Posted by rsalco

Give the car back.

Oh, that's right, you don't actually have one....

Originally Posted by DerStig

This has actually been the case until the latest generation M3. The new generation M3 comes with the same size and quality brakes as a Z06. 15.5" front, 15.3" rear. 6 piston front, 4 piston rear. Pretty impressive if you ask me for a 4 door sedan. It also stops in exactly 99 ft, very close to Z06.

I am not comparing the two cars, they are not comparable, but BMW improved the brakes significantly in the latest generation. They probably heard your concerns

Originally Posted by rsalco

Yes, for an extra $8100 you can get brakes now on your M3/M4. Roughly the price of the complete Z07 package.

Such a deal.

Originally Posted by DerStig

Your point? Neither do 95% of this forum. So I guess we shouldn't post here, and the only 20-30 members who do have the car should be allowed to?

If I weren't serious about purchasing, I wouldn't be here.

Originally Posted by Greg Quillen

The car has a ***** load of down force. It is designed for the road course track. Emphasis on handling not top speed
If all you care about is straight line. Take off all the spoilers and don't run the car in PTM modes or with rev match on . It kills way to much timing for too long on shifts.

Manuals do run 12.0 which is what all the magazine's tested. That wide first gear slows it down

Originally Posted by JoesC5

How much is "a *****load" of down force? 100#? 200#? 300#? 400#? 500#?

Show me where GM has stated actual down force numbers and not vague statements about the Z06's down force.

At least Chrysler tell us that the Viper T/A has 300# of down force at 150 MPH.

How about a published number from GM on the Z06's coefficient of drag? At least Chrysler tells us the Viper SRT has a coefficient of drag of .369.

Originally Posted by DerStig

I'm just appalled to hear this. Unbelievable. I understand their reasoning, but the limits at which this is happening is just way too low. They need to increase the threshold. I cannot believe I have to run the risk of voiding my 100k car's warranty to properly enjoy it. I think this is nothing but advertising deception on GM's part.

Originally Posted by DerStig

There was a post here actually that said new Z06 has 500 lbs of downforce at 150mph. That is more than any car below 300-400k including all Ferrari and Lambo models and obviously Porsche.

Originally Posted by Z06Wolf

Check it out-

From:------ http://www.autoevolution.com/news/20...tup-89790.html -------

-----------2015 Corvette Z06 Owners Report Heat Soak Power Loss, It’s Actually a Conservative ECU Setup-------

Now that the 2016 Corvette Z06 has hit the streets, sucking our air through its blower, a few owners have complained about experiencing a power loss after back to back runs on the highway or multiple laps on the track. They rushed to point the heat soak finger at the LT4 motor in the Z06, but this doesn’t seem to be the culprit here.

Sure, as the Z06 uses a top-mounted charging hardware, you could expect it to be prone to heat soak issues. When this issue usually appears, after a few consecutive full throttle runs, the heat builds up in the engine compartment, resulting in the a temperature increase for the air charge. This dramatically reduces supercharging efficiency as hot air has reduced oxygen molecule density, allowing for less fuel to be burned.

Moreover, hot intake air charge also increases the risk of detonation. The computer measures the intake air temperature both before and after the charge and when the latter is too high, it starts pulling timing to protect the engine.

However, like we said, this isn’t an issue with the LT4 supercharged V8 in the 2015 Z06, or at least that’s what the tuning scene is reporting.

Aftermarket world explains this is all a conservative ECU setup

Remember Vengeance Racing, the aftermarket developer that did a 1-minute burnout straight out of the showroom when picking up their Z06 last week? The crew started playing with the supercar and obviously came across the same problem.

So far, the guys only did repeated runs on the dyno, where they recorded a rather impressive 20-degree difference between the two aforementioned intake air temperatures. They also performed highway runs, but so far they’ve had 5 to 7 minute breaks between runs to analyze the resulting data and make changes to the ECU. They promissed to take their Z06 out again this week and perform back to back runs, so we’ll have that information soon.

Once again, as Vengeance Racing explains, there doesn’t appear to be any heat soak issue - such a problem wouldn’t make sense anyway, not after all the testing the Z06 has been through and after GM hit the jackpot with just-as-supercharged ZR1 in the past.

In a post on Corvette Forum, the tuner explains the issue lies with the ECU - “With the OE calibration we did experience the same thing... The timing tables are EXTREMELY conservative and the ECU will pull timing for almost any situation. I am waiting for owners to complain about "tip in" as the ECU pulls a massive amount of timing when slightly touching the gas pedal”

We know it sounds convenient for a tuner to say this, but the company claims “most of the loss of power can be addressed in the ECU.” Of course, this may just solve the problem reported by multiple owners, but it will also void the powertrain warranty, not exactly something you want on a $100,000 car, unless you were going to modify it in the first place.

Besides, many now ask themselves what happens once you remove those ECU boundaries. the only problem here is that certain people behave completely different once they’ve modded their car and subsequently complain about reliability issues - such problems would’ve appeared even without the tune, simply due to the change in the driving style.

The LT4 appears to have plenty of unlocked potential

Since the customizer claims the post-intercooler intake air temp is impressive, nobody is quite sure why GM engineers came up with such a conservative ECU tune, with emission regulations being the most plausible reason.

For the record, Vengeance Racing’s 2015 Corvette Z06, a manual, showed 585 hp and 611 lb-ft (828 Nm) of torque at the wheels in stock condition, which are very good values. The LT4 has already proven to be a very capable engine, since the tuner has achieved a hefty output bump with less-than-serious mods. To be more specific, the V8 was taken to 660 RWHP and 663 RWTQ (899 Nm) using only a cold air intake, a smaller upper pulley and, of course, an ECU remap.

We’ve contacted GM to ask them about the reason behind the shy ECU setup and we’ll be back with an update as soon as we have an answer.

Originally Posted by Snorman

And people think the C7 Z06 is going to run low-11's or barely squeak into the 10's. LMFAO.
The A8 cars are going to run solid mid-10's at over 130 mph.

Originally Posted by DerStig

There was a post here actually that said new Z06 has 500 lbs of downforce at 150mph. That is more than any car below 300-400k including all Ferrari and Lambo models and obviously Porsche.