[camaro5]

Originally Posted by JaxChris

I am curious how they would apply this dynamic deactivation to performance applications. Too many are annoyed by AFM drone now, but this new method would cause an uneven drone that will make it even more pronounced. Otherwise, it looks like a good system that could even be used to keep a cylinder deactivated when the ECU detects a single cylinder issue.

One of the benefits of the skip fire is it's supposed to end the droning.

The Delphi-Tula DSF System significantly improves engine efficiency and reduces fuel consumption by firing fewer cylinders at lower torque loads -

to reduce pumping and heat losses.

It also reduces noise, vibration and harshness by dynamically choosing firing sequences that avoid vehicle and driver resonance frequencies.

https://www.delphi.com/manufacturers...ivation-system

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[Cgocifer]

Do all Camaros have the current AFM? Does the 1LE have it? If so, I don't notice it.

[SuperSound]

Originally Posted by Cgocifer

Do all Camaros have the current AFM? Does the 1LE have it? If so, I don't notice it.

LGX and LT1 auto cars have AFM.

LT1 manuals have the AFM hardware but not actually enabled.

ZL1s don't have AFM at all.


Believe that is accurate.

[Cgocifer]

Originally Posted by SuperSound

LT1 manuals have the AFM hardware but not actually enabled.

Believe that is accurate.

Well, that would explain why I don't notice it then...

[gringo]

Originally Posted by SuperSound

LGX and LT1 auto cars have AFM.

LT1 manuals have the AFM hardware but not actually enabled.

ZL1s don't have AFM at all.


Believe that is accurate.

It seems like just the autos have AFM, but not the manuals. LTG excluded. However, in the LT1 Vette, the 7sp manuals have the AFM activated, I believe.

[SuperSound]

Originally Posted by gringo

It seems like just the autos have AFM, but not the manuals. LTG excluded. However, in the LT1 Vette, the 7sp manuals have the AFM activated, I believe.

Right the autos (except LTG and LT4) are the only ones with it enabled. But as I have heard, all LT1s have the hardware, which is how the C7 with manual has AFM.

[Bhobbs]

Originally Posted by camaro5

Old AFM is history.

Look for the LT2 with more power (near 500hp) and new skip-fire AFM along with new lifters and other valvetrain hardware.

Possibly in the 2019 Camaro SS (we'll know soon), definitely in the 2020 Corvette (C8)


i

That’s great and all but the manual Camaro still won’t be able to use it. They just need to build an LTx without the AFM for manual Camaros.

[Mr. Wyndham]

Yes, Corvette's have AFM in manual models...I never really understood why Camaro doesn't take advantage of that.

[Bhobbs]

Originally Posted by Mr. Wyndham

Yes, Corvette's have AFM in manual models...I never really understood why Camaro doesn't take advantage of that.

Camaro can’t because the transmission mounts directly to the engine. There is no way to isolate the trans from the AFM vibrations. The Corvette uses the heavier torque tube to act as a damper.

[Mr. Wyndham]

Originally Posted by Bhobbs

Camaro can’t because the transmission mounts directly to the engine. There is no way to isolate the trans from the AFM vibrations. The Corvette uses the heavier torque tube to act as a damper.

Is that the reason? Huh - never heard, nor thought of that!

[6spdhyperblue]

I remember hearing that. I just wondered if that lighter tunnel resonated it worse than just a regular bell housing. But that’s likely the reason

[TJay74]

Personally I wouldnt want AFM on the M6/M7 cars either way. I wish GM would setup the AFM as a end user option that could be turned on/off in the menu like some of the other manufactures do.

Then again I wish GM would get back to putting sportier programming in all of the transmission calibrations on their auto's as well. It is downright embarrassing how GM's auto's shift unless they are a performance vehicle. My 2016 Sierra with the A8 was horrid on the TCM calibration until I got into it and tuned it myself. The delay between up/down shifts was horrid and at times dangerous.

GM's powertrain and or transmission programmers could take some real lessons from Audi on how to make a A8 shift during normal and sport modes, it would make their vehicles way more pleasurable to drive.

[Bhobbs]

Originally Posted by Mr. Wyndham

Is that the reason? Huh - never heard, nor thought of that!

That’s my understanding.

The torque converter on the autos isolates the transmission from the vibrations, which is why auto Camaros can have it.

[Bobkd]

On the A8, can you put it in manual mode to disable the AFM? On my A6 silverado, if I put it in manual mode and toggle it up to 5th gear AFM doesn't kick in. Throttle response is much better around town.