New GM vehicles AFM - Page 3

Number 3 · 06-12-2020, 07:58 AM

Quote:

Originally Posted by UnknownJinX

Does 2.0T have AFM? I thought Mazda is the only one doing cylinder deactivation on a 4-cylinder.

I just looked it up. Yeah, it's easy to install but at the same time, it costs close to US$200. A skip-shift disabler costs like US$20~30. It's more work, but if you are doing an oil change, you could just install the skip-shift bypass while you are under the car.

yes, the new 2.0/2.7 L4 it has a very slick sliding camshaft mechanism as well. 3 stages, full valve opening, partial and no opening

DrHolliday · 06-12-2020, 09:02 AM

I feel the change in my 19 A10 SS. At first I noticed the sound difference. As I got the know the car more I can actually feel the slight change in power at cruising speeds before the sound changes and before the dash goes from v8 to v4 or back.

njweatherman · 06-12-2020, 10:36 AM

2018 2ss Camaro. With the stock NPP exhaust system from Chevy, I hardly felt it. However, once I put on the axleback and x-pipe, whole new ball game. I can definitely feel it and hear it.

arpad_m · 06-12-2020, 09:48 PM

Quote:

Originally Posted by njweatherman

2018 2ss Camaro. With the stock NPP exhaust system from Chevy, I hardly felt it. However, once I put on the axleback and x-pipe, whole new ball game. I can definitely feel it and hear it.

Did you remove the AFM valves from the midpipe or disconnect them? That would certainly make V4 mode more noticeable.

njweatherman · 06-13-2020, 01:09 PM

@arpad-m

The flowmaster scavenger x pipe for the automatic keeps the afm valves functioning. I just use the Range device and plug it in to the OBD2 port. The only time I take the Range out is when I go to the dealer for service.

CamaroRSOnt · 06-13-2020, 02:00 PM

Had AFM in my C7 and this V6, hard to tell when it is in use unless you were paying attention to the dash. Funny with my C7 I would drive it all the time in the summer , partially because it got much better gas mileage than my SUV. Typically I could run 32 mpg on the highway. I was told by a GM engineer that at 60 mph the C7 only required 55 hp to cruise at that speed. Little more slippery in the wind than the Camaro.

06-13-2020, 02:00 PM	#34
CamaroRSOnt Drives: 2023 SS Vert Join Date: Jan 2020 Location: Ontario Posts: 241	Had AFM in my C7 and this V6, hard to tell when it is in use unless you were paying attention to the dash. Funny with my C7 I would drive it all the time in the summer , partially because it got much better gas mileage than my SUV. Typically I could run 32 mpg on the highway. I was told by a GM engineer that at 60 mph the C7 only required 55 hp to cruise at that speed. Little more slippery in the wind than the Camaro. __________________ 1978 Z28 T-Roof 1984 Berlinetta 2007 Solstice Supercharged 2014 C7 Z51 2020 RS Convertible 2023 2SS Convertible

06-12-2020, 09:02 AM	#30
DrHolliday Drives: 2019 Camaro 2SS A10 Join Date: May 2020 Location: NE Ohio Posts: 10	I feel the change in my 19 A10 SS. At first I noticed the sound difference. As I got the know the car more I can actually feel the slight change in power at cruising speeds before the sound changes and before the dash goes from v8 to v4 or back.

06-12-2020, 10:36 AM	#31
njweatherman Drives: 2018 Camaro 2SS, redline edition Join Date: Jun 2013 Location: Hackettstown, NJ Posts: 209	2018 2ss Camaro. With the stock NPP exhaust system from Chevy, I hardly felt it. However, once I put on the axleback and x-pipe, whole new ball game. I can definitely feel it and hear it.

06-13-2020, 01:09 PM	#33
njweatherman Drives: 2018 Camaro 2SS, redline edition Join Date: Jun 2013 Location: Hackettstown, NJ Posts: 209	@arpad-m The flowmaster scavenger x pipe for the automatic keeps the afm valves functioning. I just use the Range device and plug it in to the OBD2 port. The only time I take the Range out is when I go to the dealer for service.

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