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Old 06-02-2014, 12:55 PM   #1
racastle
 
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(AFM) active fuel managment

anyone having trouble with AFM, and can it be disconnected, it keeps cutting in and out even when using paddle shifter, had it to dealer twice and didn't even now that it had it.2012 ss auto couldn't find anything wrong.
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Old 06-02-2014, 01:26 PM   #2
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You can get AFM tuned out by a tuner. What kind of issues are you having exactly?
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Old 06-02-2014, 01:30 PM   #3
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You can get AFM tuned out by a tuner. What kind of issues are you having exactly?
Or you can disable it with a Range module and not hurt your warranty.
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Old 06-02-2014, 01:36 PM   #4
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I'd wager that most average consumers of SS auto Camaros are not aware that their vehicle came with this cylinder deactivation feature. I'd add to that , most sales people are not either.
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Old 06-02-2014, 02:24 PM   #5
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I know I'm the exception here on camaro5 but In 5 years it's never bothered me.
Can't even tell it's there even with my Solo exhaust.
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Old 06-02-2014, 05:06 PM   #6
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I have flow master mufflers and I can hear it all the time and sometimes the response doesn't seem quick enough, some people say you shouldn't even hear the difference
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Old 06-05-2014, 09:40 AM   #7
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After reading many other posts I got around the AFM. 2 ways.

1. Shift to manual, paddleshift to first then second then thrid, but is denied, then shift back to 1. Now I'm running all 8 till I shift back to auto.

When I'm on highway I'm running auto and utilizing the AFM. Before I hit the exit ramp this is what I do to get it back to run all 8.

2. Shift out of auto to manual. Paddle shift from S to 6 then to 5 then back to 6. Giving about 2 seconds in between to allow shift to complete. Now I'm in all 8.

Any questions please pm me.

I purchased a range so no need now.
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Old 06-07-2014, 11:53 AM   #8
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I know I'm the exception here on camaro5 but In 5 years it's never bothered me.
Can't even tell it's there even with my Solo exhaust.
I didn't bother me either with muffler delete.
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Old 06-07-2014, 06:54 PM   #9
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Using paddle shift does not necessarily disable AFM.

In my 2010, you have to do a downshift to accomplish that. Not that it bothers me. Step on it and the engine immediately goes to 8 cylinder mode.
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Old 06-11-2014, 06:58 PM   #10
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Have the AFM tuned off. You will be so glad you did!
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Old 06-11-2014, 07:27 PM   #11
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What I've found is most people don't realize it or it doesn't bother them until they change their exhaust. Then its really noticeable when the exhaust drones and they come see me to have it calibrated out.

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Old 06-12-2014, 04:52 PM   #12
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I bought a Range device to tune out the AFM and it was one of the best mods I've done so far. It was so easy and I love the way the car runs and sounds now. No more AFM!!!!

Paul
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Old 06-12-2014, 05:02 PM   #13
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I bought a Range device to tune out the AFM and it was one of the best mods I've done so far. It was so easy and I love the way the car runs and sounds now. No more AFM!!!!

Paul
I'm wondering why your car would sound different by disabling the AFM. Did you have an aftermarket exhaust on it before disabling?
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Old 06-13-2014, 05:41 AM   #14
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What I've found is most people don't realize it or it doesn't bother them until they change their exhaust. Then its really noticeable when the exhaust drones and they come see me to have it calibrated out.

Phil
Yep. When I was stock exhaust it didn't bother me so much. Since I added headers, no tune yet, its annoying as hell when AFM kicks in and out. Doing cam swap soon so I will get my tune done then.
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Old 06-13-2014, 02:10 PM   #15
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It was going in and out from 8 to 4 cylinders at low speed and was driving me crazy!
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Old 06-13-2014, 07:03 PM   #16
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I really wish somewhere on one of the displays it told you when its in 4 or 8 cylinder mode. The 2014 Silverado I have as a loaner does. If you really wanted to try and save on gas, you could watch to see when its in V4 mode and adjust driving habits to keep it there.

It would of also been nice to have a button somewhere that could disable AFM until you restarted the car or hit the button again. We can disable safety features with the push of a button. Why not AFM?
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Old 06-13-2014, 07:09 PM   #17
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The Range Module works well if you do not want to tune.
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Old 06-13-2014, 09:20 PM   #18
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I'm wondering why your car would sound different by disabling the AFM. Did you have an aftermarket exhaust on it before disabling?

Yes, I installed a Solo Performance axle back exhaust right before I installed the Range device, didn't mention that.....

I was worried about a droning noise from the exhaust without the Range device and I don't have any with the device not plugged in.

Paul
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Old 06-13-2014, 09:51 PM   #19
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Yes, I installed a Solo Performance axle back exhaust right before I installed the Range device, didn't mention that.....

I was worried about a droning noise from the exhaust without the Range device and I don't have any with the device not plugged in.

Paul

10-4 So if I read you right ,adding an axle back setup won't create an undesirable exhaust note when AFM kicks in?
Frankly I'm more concerned with the four cylinders being slaved along while in AFM mode and potentially leading to cylinder wall issues on the designated four with AFM lifters. I've read quite a few write-ups throughout the internet as to the 07' - 11' 5.3 L trucks with respect to oil consumption presumably derived from the AFM feature. It's this concern that would prompt me to install a range unit on the L99. However, I'm not aware that any L99 owners have had premature cylinder wear or oil consumption issues attributable to the AFM feature. Lots of threads though about it on the siveradosierra truck forum though with respect to the 5.3 truck engine.. I own a 2012 6.2L chevy truck but mine is a L9H non AFM engine.
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Old 06-13-2014, 10:16 PM   #20
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Range disable and muffler delete on my stock L99 - AWESOME!
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Old 06-13-2014, 11:24 PM   #21
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I used the paddle shifters in s mode down shift to first gear up shift to second gear then repeat. It works everytime
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Old 06-14-2014, 08:38 PM   #22
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2014 L99 A6 w/ paddle shifters, Put into manual mode right paddle to display 2, left paddle 1, Right paddle back to 2. Did it 6 times today on my drive right after start up and before driving. Worked every time.

almost like above post
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