AFM or DFM ?

[CT4-Villain]

Does the twin turbo V-6 in the CT4-V Blackwing have AFM or DFM (cylinder deactivation) ?

 

[piranha971]

No. There is no cylinder deactivation.

 

[DCV]

Nope. No auto engine off at stop either

 

[ToniCipriani]

Nope. No auto engine off at stop either

Which I'm surprised GM isn't able to implement.

My 3-series with a manual has it and it's driven by clutch action. Didn't mind it once I got used to it, I can control when the engine restarts.

 

[CT4-Villain]

No. There is no cylinder deactivation

 

[CT4-Villain]

Ok thanks for the info Piranha

 

[CT4-Villain]

Nope. No auto engine off at stop either

I don't think it's a matter of GM unable to implement it, they've already done it on other models. They've finally realized it causes problems and people don't want it. Thanks for the info

 

[xnifex]

I thought the no auto off is part of the reason we have the gas guzzler tax? I believe the non-blackwings have the auto off button

 

[DCV]

Auto off was used to lower fuel consumption and get a higher MPG fleet ratings for car manufacturers. It had nothing to do with gas guzzler tax.

 

[ToniCipriani]

Auto off was used to lower fuel consumption and get a higher MPG fleet ratings for car manufacturers. It had nothing to do with gas guzzler tax.

I thought it was more to do with idling emissions.

 

[ToniCipriani]

I thought the no auto off is part of the reason we have the gas guzzler tax? I believe the non-blackwings have the auto off button

OP's asking about the CT4, there's no guzzler tax either way.

 

[mfcentex]

I don't think it's a matter of GM unable to implement it, they've already done it on other models. They've finally realized it causes problems and people don't want it. Thanks for the info

My wife's SUV tends to drain the battery with the Auto on/off. I told her to push the button to cancel it every time she starts it. She doesn't remember (or care) and ended up with a dead battery multiple times. The battery itself tested fine. I ended up pulling a sensor that connects to the battery for the Auto system. Now it gives a notification that it's disabled on startup, but the engine stays on all the time. No more issues with the battery. I don't think fuel economy has really changed.

 

[DonD]

Nope. No auto engine off at stop either

Thankful for that. I also have a 2022 Kia GT1 twin turbo which has idle stop and go. I really despise it and doubt those who use it get significantly better mileage. Stop for a red light, light turns green, what a PITA. Don

 

[LF4472]

My wife's SUV tends to drain the battery with the Auto on/off. I told her to push the button to cancel it every time she starts it. She doesn't remember (or care) and ended up with a dead battery multiple times. The battery itself tested fine. I ended up pulling a sensor that connects to the battery for the Auto system. Now it gives a notification that it's disabled on startup, but the engine stays on all the time. No more issues with the battery. I don't think fuel economy has really changed.

There are devices that will automatically push to button to disable auto start/stop.

 

[1Evil55]

Better fuel consumption is ridiculous. I’d be more concerned about my starter. How much fuel is actually saved by stopping a car from idling for 60 seconds or less? Then how much needs to be used to start it back up?

 

[mfcentex]

Better fuel consumption is ridiculous. I’d be more concerned about my starter. How much fuel is actually saved by stopping a car from idling for 60 seconds or less? Then how much needs to be used to start it back up?

It estimates the fuel savings in ml . I think it added up to a couple of gallons a year for our SUV. Not worth the call and headache from the wife for me.

 

[CT4-Villain]

It's all about the government that has been run by the Greentards way too much for decades now shoving their stupid CAFE standards down the throats of the automakers causing all this garbage that we have to pay extra for that consumers didn't ask for, until now, that's all about to change, and it's about time !

 

[jwolf99]