Cylinder Deactivation - working?

AndyDove21 · 07-09-2020, 11:01 AM

Just took a long drive down to Tennessee. In some videos online I occasionally see the little V8 icon in the dash change to V4. Mine's never done that, is it supposed to? I got ~28 - 30mpg on the freeway, which I'm pretty happy with, but there's several places in the cluster screens where's there a V8 icon, but it doesn't change to anything.

2020 2SS, M6, staying in 'Tour' on the freeway, top gear, in cruise.

Petrol Head · 07-09-2020, 11:09 AM

You have the manual transmission, which does not have cylinder deactivation. Only the automatics have it.

ride_002000 · 07-09-2020, 11:36 AM

Be thankful you don't have it. It's not good and most deactivate it through a tune or range device

AndyDove21 · 07-09-2020, 11:42 AM

Quote:

Originally Posted by Petrol Head

You have the manual transmission, which does not have cylinder deactivation. Only the automatics have it.

Ah, did not realize that was the case. Thanks! I didn't really want it, just concerned that something was inop. 28mpg is not bad anyway, heck it's pretty close to my sons Honda civic!!

Petrol Head · 07-09-2020, 11:51 AM

Quote:

Originally Posted by AndyDove21

Ah, did not realize that was the case. Thanks! I didn't really want it, just concerned that something was inop. 28mpg is not bad anyway, heck it's pretty close to my sons Honda civic!!

Yeah these do get really good fuel economy on the highway. Be glad you don't have it. It's something even if I didn't know how to drive stick but wanted a Camaro, I'd have learned to drive stick to avoid it.

Or like others have said it can be tuned out.

As I understand it they actually use the same engine in both cars, it's just that that function is not programmed at the factory and not in the ECM in the manual versions.

UnknownJinX · 07-09-2020, 12:05 PM

Yeah, manual Camaro doesn't have the functionality in the software. C7 Corvette manual does, however, but it only kicks in in Econ mode. I tried it once for fun, it's not bad, but I drive around mostly in Sport or Touring(if weather is crappy) so I wouldn't have used it.

I think they have worked out the kinks for AFM at this point, but yeah, some of the horror stories I have heard about cylinder deactivation means I want to avoid it. Honda and GM used to have some pretty serious issues with it.

caSStro18 · 07-09-2020, 01:43 PM

I have the A8 and I hate the AFM. Some people say they can't even notice it, but I can certainly notice when it goes from V4 to V8. I put in a Range AFM disabler and haven't looked back. Supposedly it helps prevent the A8 shudder problem as well, but I don't know about that.

JasonGofast · 07-09-2020, 01:59 PM

The ZL1 A10 doesn't have it. Do the SS and RS have it?

I don't particularly want it, but I feel I'm about wear out the hinges on the fuel tank door.

HCI2000SS · 07-09-2020, 02:08 PM

My RS V6 has it, and while you can slightly feel it, it's not enough for me to disable it. Also, it will do nothing to prevent the A8 shudder.

Bumbleboy92 · 07-09-2020, 02:13 PM

Quote:

Originally Posted by JasonGofast

The ZL1 A10 doesn't have it. Do the SS and RS have it?

I don't particularly want it, but I feel I'm about wear out the hinges on the fuel tank door.

ZL1 doesn’t have AFM at all, even with A10.

The v6 and SS both have it if equipped with the A8 or A10

arpad_m · 07-09-2020, 02:34 PM

Quote:

Originally Posted by JasonGofast

The ZL1 A10 doesn't have it. Do the SS and RS have it?

I don't particularly want it, but I feel I'm about wear out the hinges on the fuel tank door.

Hmm, maybe put a rubber stop under the go pedal?

ember1205 · 07-09-2020, 03:18 PM

Quote:

Originally Posted by arpad_m

Hmm, maybe put a rubber stop under the go pedal?

No kidding... While I understand that the info in the dash info is "wrong", but I routinely see my average MPG showing around 20MPG when I drive a mix of around town and highway.

2SS, 6MT, but my foot isn't in it all the time.

shoe5163 · 07-09-2020, 04:43 PM

2SS A8 Never noticed it activate or de-activate, love the mpg it gives you. I wish there was an eco mode to keep it on 4 cylinders when you want. Never had shudder either, 41000 so far. I do notice that this car is better above 80mph then below, it's just built to be driven hard.

Midnight Rat · 07-09-2020, 08:58 PM

Zl1 doesn’t have it, that’s why they pay the gas guzzler tax. Afm in the ss prevents the tax.

Quote:

Originally Posted by JasonGofast

The ZL1 A10 doesn't have it. Do the SS and RS have it?

I don't particularly want it, but I feel I'm about wear out the hinges on the fuel tank door.

07-09-2020, 11:01 AM	#1
AndyDove21 Drives: 2020 Camaro 2SS Rally Green Join Date: May 2020 Location: Novi, MI Posts: 32	Cylinder Deactivation - working? Just took a long drive down to Tennessee. In some videos online I occasionally see the little V8 icon in the dash change to V4. Mine's never done that, is it supposed to? I got ~28 - 30mpg on the freeway, which I'm pretty happy with, but there's several places in the cluster screens where's there a V8 icon, but it doesn't change to anything. 2020 2SS, M6, staying in 'Tour' on the freeway, top gear, in cruise.

07-09-2020, 12:05 PM	#6
UnknownJinX Drives: 19 Chevrolet Camaro 2SS 1LE Shock Join Date: Apr 2020 Location: BC, Canada Posts: 1,947	Yeah, manual Camaro doesn't have the functionality in the software. C7 Corvette manual does, however, but it only kicks in in Econ mode. I tried it once for fun, it's not bad, but I drive around mostly in Sport or Touring(if weather is crappy) so I wouldn't have used it. I think they have worked out the kinks for AFM at this point, but yeah, some of the horror stories I have heard about cylinder deactivation means I want to avoid it. Honda and GM used to have some pretty serious issues with it. __________________ Current: 2019 Chevrolet Camaro 2SS 1LE M6 Shock GM Performance Intake and that's it, because driver mods before car mods Past: 2009 Mazda RX-8 GT M6 Velocity Red Mica (Sold) 2015 Chevrolet Corvette Z51 2LT M7 Velocity Yellow Tintcoat (Flood totaled)

07-09-2020, 11:09 AM	#2
Petrol Head Account Suspended Drives: Fast if no one's looking Join Date: Aug 2019 Location: Cleveland, Ohio Posts: 1,794	You have the manual transmission, which does not have cylinder deactivation. Only the automatics have it.

07-09-2020, 11:36 AM	#3
ride_002000 Drives: 2016 F150 Join Date: May 2019 Location: Michigan Posts: 169	Be thankful you don't have it. It's not good and most deactivate it through a tune or range device

07-09-2020, 01:43 PM	#7
caSStro18 Drives: 2018 Camaro SS Join Date: Sep 2019 Location: California Posts: 564 View My Garage	I have the A8 and I hate the AFM. Some people say they can't even notice it, but I can certainly notice when it goes from V4 to V8. I put in a Range AFM disabler and haven't looked back. Supposedly it helps prevent the A8 shudder problem as well, but I don't know about that.

07-09-2020, 01:59 PM	#8
JasonGofast Used to own a ZL1 Drives: '16 Z06 Join Date: Apr 2020 Location: TX Posts: 279	The ZL1 A10 doesn't have it. Do the SS and RS have it? I don't particularly want it, but I feel I'm about wear out the hinges on the fuel tank door.

07-09-2020, 02:08 PM	#9
HCI2000SS Drives: 2018 Camaro V6/RS Join Date: Nov 2018 Location: MI Posts: 1,596	My RS V6 has it, and while you can slightly feel it, it's not enough for me to disable it. Also, it will do nothing to prevent the A8 shudder.

07-09-2020, 04:43 PM	#13
shoe5163 Drives: 2017 50th Anniversary SS Join Date: Mar 2016 Location: BG, Ohio Posts: 155	2SS A8 Never noticed it activate or de-activate, love the mpg it gives you. I wish there was an eco mode to keep it on 4 cylinders when you want. Never had shudder either, 41000 so far. I do notice that this car is better above 80mph then below, it's just built to be driven hard.

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