[Sillysspeed]

[QUOTE=Chippy;11315009]I really don’t understand why people think a ZL1 is heavy? It’s only 200pds ish more than the latest greatest C8, a lighter 911 is down on power comparatively.
I’m not saying it’s light but it’s not a pig and show me anything close to its capabilities for anywhere close to its price.
I have driven many other cars on the street and the track and I can absolutely state this car is is a bargain in performance which most here will never come close to be able to drive 10 tenths.[/

They are 3900lbs without driver. That’s fairly porky. The alpha platform does well tho either way

[NG329]

Originally Posted by Z OH 6

It has nothing to do with the voltage, that's marketing fluff.

At the moment I have to respectfully disagree… and I know that you know your stuff. But as most can probably attest to, the feeling you get when installing fresh coils and plug wires on a car with aged components (quicker starting, responsiveness, and improved fuel economy), the feeling was similar. I’m not an electronics expert but it’s my understanding that Voltage is measured in a range and you can either be at the low end, or high end. Someone keep me honest here..

To your point tho, it could very well be marketing fluff and maybe what I felt was improved responsiveness on a cooler low humidity day. I will keep an open mind to the possibility that I don’t kwtf I’m talking about l, but I honestly doubt it. Haha

[LancevanceZLE]

Originally Posted by Chippy

I really don’t understand why people think a ZL1 is heavy? It’s only 200pds ish more than the latest greatest C8, a lighter 911 is down on power comparatively.
I’m not saying it’s light but it’s not a pig and show me anything close to its capabilities for anywhere close to its price.
I have driven many other cars on the street and the track and I can absolutely state this car is is a bargain in performance which most here will never come close to be able to drive 10 tenths.

A ZL1 1LE weighs the same as the new BMW M2, so it's indeed not that heavy given it has a supercharged V8 under the hood

[KingLT1]

Originally Posted by NG329

At the moment I have to respectfully disagree… and I know that you know your stuff. But as most can probably attest to, the feeling you get when installing fresh coils and plug wires on a car with aged components (quicker starting, responsiveness, and improved fuel economy), the feeling was similar. I’m not an electronics expert but it’s my understanding that Voltage is measured in a range and you can either be at the low end, or high end. Someone keep me honest here..

To your point tho, it could very well be marketing fluff and maybe what I felt was improved responsiveness on a cooler low humidity day. I will keep an open mind to the possibility that I don’t kwtf I’m talking about l, but I honestly doubt it. Haha

You do realize that the battery is basically there to start the car. A car will run fine with a bad battery once jump started. The alternator is what powers the car when running not the battery. These cars have variable voltage systems that will fluctuate from 12.5 to 14.9 volts while you drive it. So I don't see how a different battery changes how the car performs.

[Vigilante375]

I remember when people were complaining about the weight of the 04-06 GTO and now it's the norm for cars to be in the high 3000 lbs range.

But that is what happens when regulations make it so that manufacturers have to have certain safety features.

If anyone wants a fast, very light car that is very track capable and also very straight line capable and only comes in manual.....just go buy an Ariel Atom.....

[Z OH 6]

Originally Posted by NG329

At the moment I have to respectfully disagree… and I know that you know your stuff. But as most can probably attest to, the feeling you get when installing fresh coils and plug wires on a car with aged components (quicker starting, responsiveness, and improved fuel economy), the feeling was similar. I’m not an electronics expert but it’s my understanding that Voltage is measured in a range and you can either be at the low end, or high end. Someone keep me honest here..

To your point tho, it could very well be marketing fluff and maybe what I felt was improved responsiveness on a cooler low humidity day. I will keep an open mind to the possibility that I don’t kwtf I’m talking about l, but I honestly doubt it. Haha

You did not install fresh plugs though. I could understand the difference if you had worn plugs, there is a difference there. Installing a lightweight battery that has a slightly higher output voltage isn't going to change anything though. I believe your feeling is more placebo but accumulated weight reduction is always beneficial.

[Z OH 6]

Originally Posted by Vigilante375

I remember when people were complaining about the weight of the 04-06 GTO and now it's the norm for cars to be in the high 3000 lbs range.

But that is what happens when regulations make it so that manufacturers have to have certain safety features.

If anyone wants a fast, very light car that is very track capable and also very straight line capable and only comes in manual.....just go buy an Ariel Atom.....

And the Gen 5's were much porkier than the Gen 6. You just don't see many modern performance cars under 3500lbs these days with a V8, much less supercharged, hyper exotics excluded since they use ultra lightweight materials.

[NG329]

Originally Posted by KingLT1

You do realize that the battery is basically there to start the car. A car will run fine with a bad battery once jump started. The alternator is what powers the car when running not the battery. These cars have variable voltage systems that will fluctuate from 12.5 to 14.9 volts while you drive it. So I don't see how a different battery changes how the car performs.

Yes sir. I've ran some logs in the past and the voltage while cruising usually settles somewhere in the middle of that fluctuating range with the acid battery. Full throttle will spike the voltage. I'm wondering if the lithium battery keeps it higher in that range while cruising and at smaller throttle openings. I'll make it a point to run some logs this season and then in the winter when I put the acid battery back in. I guess that will give us a definitive answer and at the very least feed our curiosity.

[NG329]

Originally Posted by Z OH 6

You did not install fresh plugs though. I could understand the difference if you had worn plugs, there is a difference there. Installing a lightweight battery that has a slightly higher output voltage isn't going to change anything though. I believe your feeling is more placebo but accumulated weight reduction is always beneficial.

You're probably right, or as I mentioned earlier, maybe due to ideal weather conditions.

[Mike818]

LFP chemistry sits much closer to alternator voltage than Lead acid. The voltage drop is much less before it starts sourcing amps to "help" the electrical system. They also typically have much lower Internal resistance than lead acid. This will all be very noticeable especially as the electrical system gets loaded up.

[NG329]

Originally Posted by Mike818

LFP chemistry sits much closer to alternator voltage than Lead acid. The voltage drop is much less before it starts sourcing amps to "help" the electrical system. They also typically have much lower Internal resistance than lead acid. This will all be very noticeable especially as the electrical system gets loaded up.

So I should notice more responsiveness, correct? Or did I read that incorrectly.

[Mike818]

Originally Posted by NG329

So I should notice more responsiveness, correct? Or did I read that incorrectly.

That has been my first hand experience working with LFP.

The alternator regulates voltage on a feedback loop and is slow to react. The voltage has to fall a bit before the lead acid battery can be there to pick up the slack. The LFP battery matches the alternator voltage so you really don't see much voltage drop at all. Because of the lower internal resistance there is also less drop from things that need a lot of instant power.

Voltage has a pretty direct effect on the performance of all the electronics. Not so much the digital stuff, since that's all lower voltage anyway. Anything doing work though will be impacted.

[NG329]

Originally Posted by Mike818

That has been my first hand experience working with LFP.

The alternator regulates voltage on a feedback loop and is slow to react. The voltage has to fall a bit before the lead acid battery can be there to pick up the slack. The LFP battery matches the alternator voltage so you really don't see much voltage drop at all. Because of the lower internal resistance there is also less drop from things that need a lot of instant power.

Voltage has a pretty direct effect on the performance of all the electronics. Not so much the digital stuff, since that's all lower voltage anyway. Anything doing work though will be impacted.

Sweet! So I'm not crazy after all. Thank you for shedding light on the subject!

Maybe if I can pick up a tenth coming out of every corner at NJMP I can drop another sec per lap.

[Z OH 6]

Originally Posted by NG329

So I should notice more responsiveness, correct? Or did I read that incorrectly.

Sure, listen the one guy with 5 posts that tells you what you want to hear instead of all the others here telling you what you don't want to hear.