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08-26-2012, 06:52 PM
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#1 |
 Drives: 2011 SS/RS CONVERTABLE Join Date: Aug 2012
Location: Paris
Posts: 3
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AFM issue???
I recently got a 2011 ss/rs convertable w/L99. Now that I have had it long enough to put a couple of hundred miles on it, I noticed a strange surging feeling in the seat of my pants while cruising at constant speed. It doesn't cause a change in speed but my RPM fluxuates a couple of hundred RPM. I have been reading about all the issues with AFM. Is that what I am feeling?? Almost like a miss or weak coil or something.
Now that I notice it, it bugs the S#!t out of me.  If it is my AFM, what tuner is recommended to get rid of that sucker.... |
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08-26-2012, 07:18 PM
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#2 |
         
Drives: 2012 Camaro 2SS/RS Join Date: Jul 2010
Location: Cleveland, OH
Posts: 3,273
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It could be. When you give it gas and all the cylinders start firing again, do you hear a farting-type sound come out of the exhaust? One of the best things I did was have AFM tuned out...SO much better without it.
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08-27-2012, 09:06 AM
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#3 |
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Drives: 2011 SS/RS CONVERTABLE Join Date: Aug 2012
Location: Paris
Posts: 3
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I haven't noticed one, but I will pay more attention. Don't hear a whole lot of anything but wind being a convertible and all...
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08-27-2012, 09:32 AM
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#4 |
 
Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008
Location: S.W. Florida
Posts: 6,294
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Sounds like AFM.
You must be cruising right at an RPM where AFM is cutting in and out. If you had an aftermarket exhaust, you would hear AFM (bad drone type sound) everytime it kicks in. |
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08-27-2012, 05:42 PM
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#5 |
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Chu no guat a hasa is?
Drives: 14 Jeep G Cherokee Overland HEMI Join Date: Jun 2011
Location: Some where in So Cal
Posts: 4,272
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Yea thats AFM. It dont bother me so its not worth losing my warranty.
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11 2SS/RSL99No Longer Stock (Sold) 6/19/14:AAC Plasma DRL's | Plug n play harness | Elite CC | Tint: 35% & 5% | LED Dome light | Show-N-Go Plate Holder | Flowmaster AT | C.A.I. Intake | VMAX CNC Spiral Ported TB | Husky Splash Guards
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08-27-2012, 06:09 PM
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#6 |
 Drives: 2011 SS Rally Yellow Vert, 2000 WS6 Join Date: Apr 2012
Location: Conway, AR
Posts: 138
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You running the cruise on flat road or is there hills? It's more than likely the AFM kicking in and out. Irritates the hell of you tell you get it tuned out.
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08-27-2012, 07:07 PM
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#7 |
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Jetcop20
Drives: '13 ZL1 A6 Join Date: Jun 2012
Location: Chicagoland
Posts: 123
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AFM
Diablosport I1000
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08-27-2012, 11:49 PM
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#8 |
 Drives: 12 Camaro <-- Sold Join Date: May 2012
Location: DFW
Posts: 26
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switch to M mode and see if does it.
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08-28-2012, 12:08 AM
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#9 | |
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Drives: his wife crazy buying mods Join Date: May 2012
Location: Gilmer, TX
Posts: 1,342
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Quote:
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Gone But Not Forgotten
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08-28-2012, 11:07 AM
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#10 | |
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Drives: 2011 SS/RS CONVERTABLE Join Date: Aug 2012
Location: Paris
Posts: 3
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Quote:
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08-29-2012, 07:22 PM
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#11 |
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If you use the paddle shifters in M it shouldnt ever go into AFM... but im not about to start that debate again.
With the stock exhaust you wont hear it as much as you will actually feel it kick in. What your describing is "feeling it". If you are going to tune it out, bye bye warranty. I'd recommend Ted Jannetty's tune via the SCT Hand Held. If you decide to do headers or a CAI through him down the road, the tunes will be free for those things since you alread have the SCT. That will save you about $500 right there...
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2011 2SS/RS L99
2017 Chevy SS 1979 Z28 Mods: Kooks Long Tube Headers, RotoFaB EForce CAI, American Thunder Catback Exhaust, PFADT Stage 1 Drag Kit + Front Sway Bar, GM Strut Tower Bar. ZL1 Fuel Pump. Nitto NT05R. RX Catch Can.LS9 Cam and Springs.LS3 Conversion.JRE Fuel Rail Upgrade.Edelbrock Eforce.60# Eforce Injectors.Extreme Racing Tune. 523/495 MY BUILD THREAD  |
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