I never thought it was the shifting. Viper weighs less, practically same power. Now, do you also weigh less than Nspec?

 

Nope. Probably within 10 lbs of each other, me being heavier. I weigh 180.

 

Agree!! The 1.7 liter blower is ridiculous. I think my 03 Cobra back in the day even used a bigger 1.8 liter. LOL I remember all the C7Z06 fanboys saying that spinning this "new style" blower would not be an issue and would blow better then the 2.3 on the ZR1.

 

Personally I think this makes perfect sense, we all know they have been doing it for years, otherwise tuners wouldn't be able to extract power out of the cars without adding or modifying anything past the computer. This time they are just being open and honest about it.
Personally, I will leave the car alone until the warranty is over , as I have done with my C6Z06 and CTS-V wagon. But if down the road I want more performance I can extract it. I feel it gives Manufacturers the ability to build cars we truly want, while staying within the guidelines and regulations we now live in. Give me the option to retain the warranty if I want. I'm not going street racing and don't really have time to go to a track, but to have a car that can carve canyons like nothing else is what I want.
Personally I am going to keep extending the warranty on my C6Z06 until I am sure there is a good fix to stop the motor from imploding itself.
My 01 Silverado is the only thing with ECU tuning, CAI and LT headers.

 

I'm thinking that adding a meth kit to this equation will def help out, even if not tuned for more power(saving the warranty), but just the iat cooling it provides. That's possibly the route I'll go, especially when my car is in FL.

 

https://autos.yahoo.com/news/conserv...135005851.html

 

NineBall,

People were grubered and they don't like it.

What's your point.

Irrelevant. It can't spend just 30 minutes on the track at maximum performance.

No. Thy're complaining because they were grubered. They must have learned how to confuse the "dumb" customers from the Democrats.

I guess you'll park yours at the track or pay for the tune?

 

Possible true but one does not like to see performance drop off.

But then outside of the track crowd the car has more than enough power just as my lowly LS3.

Not a fan of cylinder deactivation neither.

 

It was due to GM wanting to meet the European pedestrian impact standards so they had to fit it under the hood. Notice the slope of the lid compared to that of the LS9. If they went with a larger blower the hood would have had to be raised for clearance and it couldn't be sold in Europe.

 

All I'm bitching about is seeing a 650 horse car only pull 153 on the back straight of RA when it should be well into the 160s. I know I'm a broken record, but Probst stated the car got slower every lap losing around 2mph per.

 

Ding!

I drove both the Z06 and ZR1 at Spring Mountain. At the end of a session in either car you could tell that both had fallen over a bit, and the LS9 was pushing 230+ water temps in Nevada desert hit. The LS7 was only breaking about 219 degrees, but straights that I was pulling 118-119 on at the beginning of the session were down to only 116 by the end of it.

You can't change the physics of how heat is going to slow things down, blown or unblown.

 

If that statement was true, you could have a more aggressive tune since the vast majority would never ask the car to go there. Then the people that track the car would be very satisfied as well.

 

Yes!! and Pilgrim was faster!! and he ran at the end of the day?? I'm just saying!!! Read into that what ever you like!! LOL! By the way those cars at Road Atlanta ran 3 to 5 laps and then in and sat for few minutes and back out with another driver and sometimes with a passenger. JD

 

This has nothing to do with GM's lawyers (who were fine with homicidal ignition switches for a decade) and all about meeting corporate mandated emissions standards and CAFE standards. It's about the warranty as well. They are absolutely correct when they say that the vast majority of their customers will be more than satisfied with the ECU tune and performance of the Z.

If you want to turn you're Z into a race car have it at, but GM is not going to underwrite your racing budget through their warranty.

They're trying to build a highly civilized amenity loaded sports car for the masses, and by the accounts of those who have them, that is exactly what they've done.

I think what we're seeing here by some are their unreasonable expectations crashing into reality. There's a reason why Viper struggles to sell a couple thousand cars a year (haven't Viper sales been in the hundreds for a few years now?). GM has decided they have no interest in that market.

So while most of us will be in love, some will be apoplectic and still others will troll them endlessly.

 

GM better figure out this ECU thing, if this thing is holding the Z06 full potential they had to do something about it. Never heard cars like 911 Turbo S, Ferrari 458, ZR1 or the Stingray have this problem.

 

I think you may be onto something here. Corvette will become a $100K status symbol for the "in" crowd like the Volvo and now Land Rover. Jeremy Clarkson (Top Gear) has made the observation that many high performance cars will soon disappear due to societal and economic pressures. So Corvette will be kind of a symbol that you made it to the upper middle class and we'll see no more domestic marques at the track.

 

This post came off way more negative than I intended and I didn't mean it that way but anyway..

Someone help me understand what the EPA/emissions has to do with a 650hp car magically pulling timing and slowing down the 4th time it races someone? (at wot)

Blaming emissions seems like a crappy cop out here, it seems obvious they are trying to protect the engine due to the blower design and potential heat/cooling issues. Emissions shouldnt be a huge problem on a blown car to begin with and does the EPA even really give a damn or test WOT emissions?? Much less only on the 4th+ time it races someone or cares more and more about emissions as it turns more laps at a track? I'm just not sure what smog could have anything at all to do with this.

From what I'm gathering, it doesn't even seem like we are seeing any heat soak, but the computer pulling all sorts of timing etc before it even comes close to that point. If it is to that point or true heat soak, then that's a true engineering problem that never should have happened.

With the "we feel most owners will be happy with the level of performance..." comment...yes I think most people would be happy with 650hp Z06, but it seems like owners aren't getting what they paid for here. We'll see how this shakes out but if I paid 80k+ for a 650hp car with the heritage/assumption that has always been a road racing warrior and fast as hell at everything, and it's doing what it's doing....I'd be pretty upset.

I still hate the idea of a 3500lb FI Z06 but that's another issue and I sound like I'm trashing the car when I was stoked as hell for it


Correct me if I'm wrong in any the above but that's my thoughts..

 

Fantastic taste in cars.

 

I'm not feeling this issue is as bad as people are making it out to be -- not yet, at least. I'm willing to give it a little time, but my use scenario is almost all track running, in ambient temps that are almost always over 90 degrees. I've run at both COTA and Thunderhill in ambient temps over 100, and one weekend at T'hill saw peak temps of 104 degrees on Saturday and 106 on Sunday.

This is one thing I like about my 2014 Z/28. The output never drops, the temps never trigger the ECU, and the car feels bulletproof when other cars are wilting around it. We'll see how this plays out, but I may end up sticking with my "slowpoke" Z28...

 

This!