AFM L99 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JoshJ81 · 09-17-2009, 03:11 AM

I asked this in a reply but I think this could be it's own thread and maybe even get a real response from a GM guy without the political BS?

Is the AFM really needed? Why or why not? If not, then why can't we have it tuned out at the dealer and not harm warrenty?

I've seen some people state they can't really see a difference in gas mileage when the AFM is turned off. Thoughts?

I'm taking mine to the dealer on Friday to have the engine and trans computers checked for updates (I hear there is a long list of needed updates). I'm going to make sure to ask about the AFM and if GM has made a reflash to remove the AFM (some said they did, so I'm going to check into it) I'll report back Friday evening if it takes that long LOL.

Augie1978 · 09-17-2009, 06:05 AM

I went into my dealership last week to have them order a new clip for my A pilar trim piece that wont stay attached. They ran my VIN number which is 11,526 and told me there were no updates available for my car. I think it would make sense if the AFM would not activate when the car is in sports mode.

JoshJ81 · 09-17-2009, 06:18 AM

11K? Hmm I'm sure I saw someone with a 20k or higher VIN and they gave him a lot of updates? My VIN is 15xxx something.

MikeZ28 · 09-17-2009, 03:02 PM

If GM used the AFM during the EPA fuel mileage and/or emission tests, it might violate federal law for them to disable it on production cars. I'm speculating, not stating that as a known fact. Plus, the government could see it as GM trying to cheat around the gas-guzzler tax.

PQ · 09-17-2009, 03:29 PM

Quote:

Originally Posted by MikeZ28

If GM used the AFM during the EPA fuel mileage and/or emission tests, it might violate federal law for them to disable it on production cars. I'm speculating, not stating that as a known fact. Plus, the government could see it as GM trying to cheat around the gas-guzzler tax.

I'm sure this is true, but the question I think is why couldn't they still warranty it if the customer had it tuned out by someone else.

camaro1 · 09-17-2009, 04:28 PM

gm does not have the ability to turn off afm/dod, yes there are updates for the ecm, mostly just for misfire counter and a/c clutch protection(shuts off the a/c compressor at a different rpm at wot), and generic scan tool data update

BeermanSS · 09-17-2009, 04:34 PM

yeah GM couldn't do it probably would be considered cheating around the GGTx. They have to prove that the tune (removal of AFM only) is what caused the part or parts to fail. Beyond removing AFM I would say they could prove it, but if you left fueling/spark/airflow/tq mgmt stock they may not. Also would depend on what the warranty claim was on. If it isn't the engine there would be no reason to void the warranty.

*mlee* · 09-17-2009, 04:35 PM

Had mine in for the updates last week hoping to help with the herky jerkys. No help there and it appears my gas mileage has taken a drastic drop. Like from 18mpg to 13 (mix of highway and in town). I'm checking it the old fashioned way since everything was reset after the updates. May still be learning too.

Totally forgot to ask about AFM...

litle88 · 09-17-2009, 05:05 PM

Wouldn't you have to change the lifters to disable the DOD?

I got to do some research on this since my brother's 2ss will be in soon!
and Im a believer of "SS" meaning Stock Sucks!! LOL

BeermanSS · 09-17-2009, 05:18 PM

I don't think so, I think that you would only need to do that if you want to raise the compression and redline up to those of the LS3

iwanttogofastNY · 09-17-2009, 08:34 PM

what is afm??....sorry tried to find answer on my own

JoshJ81 · 09-17-2009, 08:39 PM

Active Fuel Management, Makes the engine fire on 8 or 4 cylinders depending on your RPM speed to save fuel

Wacker · 09-29-2009, 10:52 PM

Quote:

Originally Posted by JoshJ81

Active Fuel Management, Makes the engine fire on 8 or 4 cylinders depending on your RPM speed to save fuel

Load Based system

Saves 5-8% in fuel. If tweaked by a good tuner you can gain up to 20% during highway driving.

JoshJ81 · 09-29-2009, 11:18 PM

Quote:

Originally Posted by Wacker

Load Based system

Saves 5-8% in fuel. If tweaked by a good tuner you can gain up to 20% during highway driving.

Would that void a warranty if made the MPG better?

09-17-2009, 03:11 AM	#1
JoshJ81 Drives: '10 Camaro 2SS/RS Black Join Date: Jul 2009 Location: Wichita Falls, TX Posts: 257	AFM L99 I asked this in a reply but I think this could be it's own thread and maybe even get a real response from a GM guy without the political BS? Is the AFM really needed? Why or why not? If not, then why can't we have it tuned out at the dealer and not harm warrenty? I've seen some people state they can't really see a difference in gas mileage when the AFM is turned off. Thoughts? I'm taking mine to the dealer on Friday to have the engine and trans computers checked for updates (I hear there is a long list of needed updates). I'm going to make sure to ask about the AFM and if GM has made a reflash to remove the AFM (some said they did, so I'm going to check into it) I'll report back Friday evening if it takes that long LOL. __________________ 2SS/RS A6 L99 - Black w/White Stripes K&N Air Intake System Muffler Delete

09-17-2009, 06:05 AM	#2
Augie1978 Drives: 2011 2SS RS Vert Join Date: May 2009 Location: Central Illinois Posts: 621	I went into my dealership last week to have them order a new clip for my A pilar trim piece that wont stay attached. They ran my VIN number which is 11,526 and told me there were no updates available for my car. I think it would make sense if the AFM would not activate when the car is in sports mode. __________________ 2SS RS, Triple Black Vert, Manual, Hurst Shifter. American Racing Headers, Roto-Fab CAI

09-17-2009, 06:18 AM	#3
JoshJ81 Drives: '10 Camaro 2SS/RS Black Join Date: Jul 2009 Location: Wichita Falls, TX Posts: 257	11K? Hmm I'm sure I saw someone with a 20k or higher VIN and they gave him a lot of updates? My VIN is 15xxx something. __________________ 2SS/RS A6 L99 - Black w/White Stripes K&N Air Intake System Muffler Delete

09-17-2009, 04:28 PM	#6
camaro1 Drives: 550+RWHP 2010 camaro Join Date: Sep 2007 Location: wisconsin Posts: 1,588	gm does not have the ability to turn off afm/dod, yes there are updates for the ecm, mostly just for misfire counter and a/c clutch protection(shuts off the a/c compressor at a different rpm at wot), and generic scan tool data update __________________ 415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller

09-17-2009, 04:35 PM	#8
mlee CamaroFans.com Drives: ZLE & ZR2 Join Date: Oct 2008 Location: Conroe, TX Posts: 37,958 View My Garage	Had mine in for the updates last week hoping to help with the herky jerkys. No help there and it appears my gas mileage has taken a drastic drop. Like from 18mpg to 13 (mix of highway and in town). I'm checking it the old fashioned way since everything was reset after the updates. May still be learning too. Totally forgot to ask about AFM... __________________

09-17-2009, 03:02 PM	#4
MikeZ28 Drives: '04 GTO, '00 Z28, '95 Z28 Join Date: Mar 2009 Location: Austin, TX Posts: 225	If GM used the AFM during the EPA fuel mileage and/or emission tests, it might violate federal law for them to disable it on production cars. I'm speculating, not stating that as a known fact. Plus, the government could see it as GM trying to cheat around the gas-guzzler tax.

09-17-2009, 04:34 PM	#7
BeermanSS Drives: 2005 Cobalt SS/SC Join Date: Nov 2008 Location: Wilson, NY Posts: 214	yeah GM couldn't do it probably would be considered cheating around the GGTx. They have to prove that the tune (removal of AFM only) is what caused the part or parts to fail. Beyond removing AFM I would say they could prove it, but if you left fueling/spark/airflow/tq mgmt stock they may not. Also would depend on what the warranty claim was on. If it isn't the engine there would be no reason to void the warranty.

09-17-2009, 05:05 PM	#9
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	Wouldn't you have to change the lifters to disable the DOD? I got to do some research on this since my brother's 2ss will be in soon! and Im a believer of "SS" meaning Stock Sucks!! LOL __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

09-17-2009, 05:18 PM	#10
BeermanSS Drives: 2005 Cobalt SS/SC Join Date: Nov 2008 Location: Wilson, NY Posts: 214	I don't think so, I think that you would only need to do that if you want to raise the compression and redline up to those of the LS3

09-17-2009, 08:34 PM	#11
iwanttogofastNY Drives: 2010 Camaro 2SS/RS ABM Join Date: Jun 2009 Location: Westchester County, NY Posts: 224 View My Garage	what is afm??....sorry tried to find answer on my own __________________ 2SS/RS/M6 \| ABM \| White Stripes \| Black Int Mods: American Racing Headers & Exhaust, Airaid Intake, Pfadt Front/Rear Sway Bars, Stealth Bulbs, AAC LED bowtie, AAC Concept LED Side-markers ABM/Tinted, 20% Tints, Chuck COW Tune, MGW shifter (blue with white racing stripes). Coming Soon: 4:10 Gears?

09-17-2009, 08:39 PM	#12
JoshJ81 Drives: '10 Camaro 2SS/RS Black Join Date: Jul 2009 Location: Wichita Falls, TX Posts: 257	Active Fuel Management, Makes the engine fire on 8 or 4 cylinders depending on your RPM speed to save fuel __________________ 2SS/RS A6 L99 - Black w/White Stripes K&N Air Intake System Muffler Delete

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