That’s excellent news. So just to confirm : once I plug it into the OBD , it just becomes part of the car and the AFM is gone… Correct?

 

Good to know, thanks!

 

I believe the Carbyte device parasitic draw is "less than 1 ma".

On their website
https://www.obdlink.com/products/carbyte/
is table of specifications. There is line called "Battery Saver Low Power Mode" and it says its less than 1 ma.

I have measured the normal parasitic draw of the my 2021 C8 using a low current DC clampmeter when the car has reached its "benign" "sleeping" state, which is about 10 minutes or so after it has been shut off and undisturbed. Its about 10 ma. So based on the CarByte spec, it would probably increase the parasitic draw by less that 10%. I believe that can be considered negligible.

Its normal active draw is 55 ma.

 

Curious to hear how you guys make out with it. I went through the Range device battery drain issue in my '14 Silverado. It would kill the battery if not driven for more than 3-4 days, so I went to a Diablo tuner for it.

 

Yes, AFM is disabled once coolant temps get up to normal temps of 165 or so. I will have mine on saturday so I will post review...

 

Yes, I can confirm once the car has warmed up, it's gone. The newer vehicles (Global B architecture) have programming in them that block AFM/DFM kill until things have gone through self checks. On the 22 Escalade, it has to hit about 40 mph one time on a drive, on the C8 its temperature... On the C7, on the other hand, it's immediate. Interesting thing with the Carbyte unit, it doesn't block the emissions monitors from running unlike all the other disablers. Goes for all the vehicles - good if you have to worry about emissions testing in your state.

 

Interestingly, the Service Manual also says that the minimum temperature required for Cylinder Deactivation is 100 deg F.

 

Like the excitement from some of the crew. Jury is still out though, need to hear it from an, "established member"!

 

JerryU was the 1st to post the Carbyte product on this Thread. Copy post 313 below:

SIDEBAR (For those who want details AND are capable of understanding!)
JerryU still thinks V4 is fine and would NOT defeat when using MY Mode in town. But he often drives in Z-Mode (Power at Max) the ~30 mile trip to town on back roads. Car seldom past 5th gear. Use Z-Mode NOT to eliminate V4 but so not driving in engine lugging 7th and 8th and for the fast throttle response! Always been an aggressive driver. But drive fast only were safe!

In his E-Ray he does not defeat Stop/Start, just like in wires' prior 3 BMW X5 SUV's. Her current 2025 is a Hybrid and 95% of the time she is driving on battery. We only pay $0.053 kWh charging at night as we have been on Time of Use power billing with Duke Power since we moved to SC in 1985. That is about 25% the cost of gas!

But a key reason is Duke Power has a Nuclear Power Station in the next town and has supported industry to install solar power. GE who makes all the MRI's for the country+ generates more than enough power to run the plant and have Duke Power pay them for excess, same with ABB etc. My neighbor with a large farm (live in a rural area) has several hundred acers in Solar cells. Makes more money selling Power to Duke than crops.

Just think it's Smart to save gas where I can! The ICE is very inefficient with only about 20% of the energy is gasoline getting to the rear wheels. The remainder goes to heating coolant, exhaust and idling. And about a 1/4 of the energy that gets to the rear wheels goes into heat when braking. The Hybrid E-Ray as well as wife's BMW Hybrid captures some of that wasted energy to charge the battery! Yep some of us actually do understand the issues and care!

BTW toured the local Duke Power generating complex and they have huge Natural Gas turbine generators to fill peak and high demand periods. Two of my largest customers, Chart Industries and Honeywell LNG (formerly Air Products facility) are major players making Natural Gas liquefaction equipment. Stocks doing very well!

Note size of man next to massive Jet Engine Generator. Shipped from Factory and installed about anywhere quickly! IMO the future NOT windmills!


JerryU's Post #313. 1st to post the Carbyte Product on this Thread!
Just saw a video of this working on a Stingray in Tour Mode!

$149 on Amazon! It can be done!

 

Their FAQ says after a few minutes it goes into a low power mode that draws less than 1 mA.

https://www.obdlink.com/carbyte-faq/

 

So it's really only between 100F and 160F that AFM will be active. I think in most normal driving that period will pass pretty quickly.

 

So, I will have to deal with 5 minutes of annoying AFM in/out clunks.

 

Or put the car in manual mode for that short period.

 

When using CARBYTE, make sure the firmware is up to date with version 5.11.5 and up. Currently version 5.11.6 is available for download with the Carbyte app. The version that allows functionality with the C8 debuted in version 5.11.5...

 

Just checked again today. Their list of supported vehicles shows Corvette thru 2022. It just needs to be updated, right?

 

To add to the fodder, one of the things I read was a difference in it's immediacy. Early '22 and older, it's immediate. Later models are subject to either the 40MPh or 165 temp. But I'm not 100% clear on that.

 

I just recieved mine this morning, got it because after installing my Borla Exhaust last week, I have a annoying AFM clicking noise.
Opened it up, updated firmware, downloaded app and installed it. Just came back from my first drive and everything works like advertised. V4 came up once at start but then never came back on, no more exhaust clicking noise.

 

It says it can also function as a scan tool. Have you tried that?
What year is your C8? 2023?

 

It would have came handy a few days ago when I had a check engine light due to my exhaust. Yes i have a 2023 and app has three buttons, afm/dfm toggle, auto start toggle and diagnostic mode. I tried to run a scan but just said no DTC found, since I don't currently have engine light on.

 

Will it let you view scan tool data - not just codes? There is quite a bit of data that some scan tools can see. I would not expect this device to do any active things such as initiate test procedure, but I was wondering if it will show more than just trouble codes.

Oh, and that's good news about the 2023. Their current list of supported Corvettes stops at 2022 - and I was pretty sure it just needs to updated.