08-18-2019, 02:24 PM | #1 |
AFM ?
My car, 2019 SS has AFM which I understand will switch the engine to run on 4 cylinders at light loads and I'm sure there are numerous criteria for this to happen.
I really don't mind, as this car gets very good fuel mileage for a car this much fun to drive. The part I don't like is the constant switching between V8 and V4 mode in town. It's just to much and can be felt and heard. Can this switch be stopped somehow in town at low speeds? It would be nice if the switch would be inhibited till maybe 40MPH??? Comments please. BTW, I know it can be shut off completely as a friend has his tuner do that to his gen5 SS. But I don't want it disabled completely. |
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08-19-2019, 08:31 AM | #2 |
Drives: Chevy Camaro Join Date: Jul 2019
Location: Dallas
Posts: 420
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Range device.
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08-19-2019, 09:07 AM | #3 |
I have no idea what that is.
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08-19-2019, 06:44 PM | #4 |
Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
Location: Norman, OK
Posts: 2,424
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Short of tuning it off or changing the parameters of how it comes on/off the Range device is the only other way to defeat AFM. You can put the car in Sport mode or Manual mode, I think both of those modes keep it from working.
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08-19-2019, 08:31 PM | #5 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,601
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2018 Camaro 2SS — G7E MX0 NPP F55 IO6
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08-20-2019, 07:37 AM | #6 |
The AFM works in all modes on my car.
The range device shuts it off all the time. Not what I want. |
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08-20-2019, 08:57 AM | #7 | |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,601
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Quote:
This is what I see in the tune and apparently the Range device also works the same way.
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2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune 1100 - 1/30/18 | 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 | 3800 - 2/26/18 4300 - 2/27/18 | 4B00 - 3/01/18 4200 - 3/05/18 | 4800 - 3/14/18 5000 - 3/16/18 | 6000 - 3/19/18 |
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08-20-2019, 09:14 AM | #8 |
Drives: 2016 2SS BLK A8 Vert Join Date: Dec 2017
Location: MA
Posts: 1,029
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If I remember correctly I would run almost always in sport mode while manually shifting gears at 2500-3000 rpm and it kept the AFM valves open. Thus, once you're out of town bump the shifter over and it should kick back in. I have since had it tuned out and am very, very happy not hearing it, and gladly pay more in fuel. lol
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08-20-2019, 08:06 PM | #9 |
Drives: 2016 Camaro SS Join Date: Jul 2016
Location: Korea
Posts: 417
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I think you can adjust the parameter here. |
08-21-2019, 10:05 AM | #10 |
That looks promising.
But I suppose it would void my warranty. |
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08-21-2019, 10:30 AM | #11 |
Drives: 2016 Camaro SS Join Date: Jul 2016
Location: Korea
Posts: 417
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If you care the warranty, try Trifecta tune.
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08-21-2019, 11:03 PM | #12 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,749
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I wouldn’t. No control over your own car. Plus, they (Trifecta) tried to tell me that zeroing the TCC Desired Slip tables would ruin my transmission. Absolutely hilarious.
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