Tuning out AFM/DoD, no difference.... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

The IOM Ninja · 04-30-2011, 09:48 PM

Has anyone with a L99 noticed that tuning out Active Fuel Management has no effect on your fuel economy? I don't know what it is, perhaps it's the JRE tune, but I was getting close to 14.9L/100 KM [15.8 MPG] (Fairly aggressive driving) and now I get between 15.1 and 15.3L/100 KM [15.4 MPG]. I'm starting to think that AFM hardly activates ever. I know I have read that there is a certain criteria that will activate it but it really pisses me off that we have to tune it out if we want the unrelenting power that is inside of the L99 without any lag. Before anyone says, yes I know there is no one telling my I have to tune my car but I decided to anyways.

I'm one of the guys that believes that the way Ted Jannetty tunes both the ECU and TCU is the way the car should have come stock. Big shout out to Ted BTW, thanks for the tune and I look forward to buying more parts from you!

SGOS252382 · 05-01-2011, 07:47 AM

The difference will be seen on the highway. Around town driving won't be affected much.

When I deleted AFM/DOD I did notice my highway mileage come down. But around town driving remained pretty much the same.

Scott@Bjorn3D · 05-01-2011, 07:54 AM

Yeah I went from 25 to 23-24 on the highway.

NateSS · 05-01-2011, 08:07 AM

Mine went down a little bit, but not enough to make a big difference... maybe one or two mpg on the highway.

I still do between 14 and 15 in town.

cactuseater · 05-13-2011, 03:24 AM

Does anyone know if a Chevy dealer is willing to disable the AFM?? I am so tired of the lack of response on the highway when trying to merge,pass, etc. The AFM also shuts down the bank to 4 cyl at lower speeds, even around 30mph! It's a dog in the city, and a part time 8 cyl on the highway. (L99 Auto). Any suggestions?? Just don't want to void the PT warranty, all I want is that annoying damn AFM turned OFF. Thanks!

cactuseater · 05-13-2011, 03:45 AM

OOPS!! I see this is a popular question, got my answer on another thread. Seems that the dealers are not into turning it off, and I'm pretty much stuck with it or a permanent message stored that it has been "tuned" thus voiding the PT warranty. Soon as I can it will be traded in for a manual. I cannot believe I let my wife talk me into a freakin auto. Never again. :(

myold88 · 05-13-2011, 10:05 AM

I've got to state this again: AFM must vary from car to car.
With my stock auto L99 I never detect the AFM kicking in or out. Since I didn't want to void my warranty and was worried about droan, I waited for the Solo J-pipe axle backs.
I swear I still can't tell.

KARBON · 05-13-2011, 11:20 AM

Mine wasn't to bad after MBRP catback, but after long tubes and high flow cats it was super noticable..Sounded like a 4 banger diesel....

JAB · 06-15-2011, 11:29 AM

Bro with AFM Im getting 10-12MPG so Be Happy lol.. I notice it on the Freeway Ocasionally if im crusing below 2K Rpm and then Accelerate You can Hear and Feel the Other Cylinders Kick in, It really Donsent Do much Unless You're Cruising at Low Rpm's For a while (FreeWay). And theres Really No Reason To Deactivate It Unless You're Getting a S/C Or some other Major Power Adders

toesuf94 · 06-15-2011, 12:12 PM

And if you find a dealer that will turn OFF the AFM...never mention their name in print. I was told that altering a car's ability to meet CAFE standards is a HUGE fine if caught by the feds by my dealer.

My L99 is having an E-force installed...so I will never experience the drone.

cmacclel · 06-26-2011, 08:59 AM

I test drove a stock white camaro and never noticed the AFM. I then found / bought another camaro in IOM that had the GM factory performance exhaust and immediately noticed the afm. If your just cruising around no matter what speed your at it kicks and has an annoying sound from the exhaust.....sounds like a 4 cyclinder diesel as someone already mentioned.

Mac

Unobtainium · 06-30-2011, 07:59 PM

I find it screws around a lot less in manual mode with the paddles.

marcus66 · 06-30-2011, 08:19 PM

Quote:

Originally Posted by Unobtainium

I find it screws around a lot less in manual mode with the paddles.

+1

NipTuckTaxi · 06-30-2011, 08:46 PM

Lost 2-3mpg on the highway. when i had AFM it kicked in ALOT! hills for a while then flat roads for a while is MS highways. im glad to be rid of the drone. i can get the mpg back with underdrive and ported TB

04-30-2011, 09:48 PM	#1
The IOM Ninja Account Suspended Drives: 10' IOM 2SS/RS, 13' GB Shelby GT500 Join Date: Sep 2010 Location: Sherwood Park, AB Posts: 2,180	Tuning out AFM/DoD, no difference.... Has anyone with a L99 noticed that tuning out Active Fuel Management has no effect on your fuel economy? I don't know what it is, perhaps it's the JRE tune, but I was getting close to 14.9L/100 KM [15.8 MPG] (Fairly aggressive driving) and now I get between 15.1 and 15.3L/100 KM [15.4 MPG]. I'm starting to think that AFM hardly activates ever. I know I have read that there is a certain criteria that will activate it but it really pisses me off that we have to tune it out if we want the unrelenting power that is inside of the L99 without any lag. Before anyone says, yes I know there is no one telling my I have to tune my car but I decided to anyways. I'm one of the guys that believes that the way Ted Jannetty tunes both the ECU and TCU is the way the car should have come stock. Big shout out to Ted BTW, thanks for the tune and I look forward to buying more parts from you!

05-01-2011, 08:07 AM	#4
NateSS 1337 AH64D driver Drives: 2010 Camaro 2SS/RS L99 Join Date: Sep 2010 Location: Houston, TX Posts: 254	Mine went down a little bit, but not enough to make a big difference... maybe one or two mpg on the highway. I still do between 14 and 15 in town. __________________ Cam/Heads by ARD, Tune by G-Force, Transmission/Gears by Circle D

05-13-2011, 10:05 AM	#7
myold88 Drives: SUMMIT WHITE 2SS/RS CAMARO Join Date: Feb 2008 Location: 2018: Lakewood Ranch, Fl. Posts: 8,171 View My Garage	I've got to state this again: AFM must vary from car to car. With my stock auto L99 I never detect the AFM kicking in or out. Since I didn't want to void my warranty and was worried about droan, I waited for the Solo J-pipe axle backs. I swear I still can't tell. __________________

06-15-2011, 11:29 AM	#9
JAB C_H_E_V_Y Drives: Velocity Yellow C6 Z06 Join Date: Jan 2010 Location: Sugar land/Houston TX Posts: 704	Bro with AFM Im getting 10-12MPG so Be Happy lol.. I notice it on the Freeway Ocasionally if im crusing below 2K Rpm and then Accelerate You can Hear and Feel the Other Cylinders Kick in, It really Donsent Do much Unless You're Cruising at Low Rpm's For a while (FreeWay). And theres Really No Reason To Deactivate It Unless You're Getting a S/C Or some other Major Power Adders __________________ Heritage Grill Flat Black Full Body Stripes Flat Black Tail Light Bezels Flat Black Camaro Emblems Flat Black / Red SS Emblems Flat Black Side Markers Chevy Bowtie Delete Led Grill Lighting Interior Led Lighting Near Future ( 1'' Drop Springs, GFX and headers,Xpipe and 3in catback with an CAI is on it way Getting ready for the PROCHARGER )

06-15-2011, 12:12 PM	#10
toesuf94 Drives: THR #11 E-force supercharged Join Date: Jul 2008 Location: Cedar Rapids, IA Posts: 4,746	And if you find a dealer that will turn OFF the AFM...never mention their name in print. I was told that altering a car's ability to meet CAFE standards is a HUGE fine if caught by the feds by my dealer. My L99 is having an E-force installed...so I will never experience the drone. __________________ Cars and women are both going to give you problems...but you can pay somebody else to fix your car!

05-01-2011, 07:47 AM	#2
SGOS252382 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008 Location: S.W. Florida Posts: 6,294	The difference will be seen on the highway. Around town driving won't be affected much. When I deleted AFM/DOD I did notice my highway mileage come down. But around town driving remained pretty much the same.

05-01-2011, 07:54 AM	#3
Scott@Bjorn3D Drives: Kami, 2013 2SS LS3 Luvin Join Date: Oct 2008 Location: Eufaula, Alabama Posts: 6,427	Yeah I went from 25 to 23-24 on the highway.

05-13-2011, 03:24 AM	#5
cactuseater Drives: . Join Date: Nov 2010 Location: USA Posts: 856	Does anyone know if a Chevy dealer is willing to disable the AFM?? I am so tired of the lack of response on the highway when trying to merge,pass, etc. The AFM also shuts down the bank to 4 cyl at lower speeds, even around 30mph! It's a dog in the city, and a part time 8 cyl on the highway. (L99 Auto). Any suggestions?? Just don't want to void the PT warranty, all I want is that annoying damn AFM turned OFF. Thanks!

05-13-2011, 03:45 AM	#6
cactuseater Drives: . Join Date: Nov 2010 Location: USA Posts: 856	OOPS!! I see this is a popular question, got my answer on another thread. Seems that the dealers are not into turning it off, and I'm pretty much stuck with it or a permanent message stored that it has been "tuned" thus voiding the PT warranty. Soon as I can it will be traded in for a manual. I cannot believe I let my wife talk me into a freakin auto. Never again. :(

05-13-2011, 11:20 AM	#8
KARBON Drives: 2010 CAMARO 850 RWHP/733 RWTQ Join Date: Sep 2010 Location: Lafayette,LA Posts: 300 View My Garage	Mine wasn't to bad after MBRP catback, but after long tubes and high flow cats it was super noticable..Sounded like a 4 banger diesel....

06-26-2011, 08:59 AM	#11
cmacclel Drives: 2010 2SS Join Date: Jun 2011 Location: Boston Posts: 39	I test drove a stock white camaro and never noticed the AFM. I then found / bought another camaro in IOM that had the GM factory performance exhaust and immediately noticed the afm. If your just cruising around no matter what speed your at it kicks and has an annoying sound from the exhaust.....sounds like a 4 cyclinder diesel as someone already mentioned. Mac

06-30-2011, 07:59 PM	#12
Unobtainium Fabricator Drives: 2011 2SS Summit White Join Date: Jun 2011 Location: Langdon, AB Posts: 505	I find it screws around a lot less in manual mode with the paddles. __________________ Roto-fab CAI Unobtainium Welding Exhaust ARH LT's 393whp L99 GPI VVT Turbo Cam-in

06-30-2011, 08:46 PM	#14
NipTuckTaxi Drives: 2010 Camaro 1SS Join Date: Apr 2011 Location: Columbia, MS Posts: 147	Lost 2-3mpg on the highway. when i had AFM it kicked in ALOT! hills for a while then flat roads for a while is MS highways. im glad to be rid of the drone. i can get the mpg back with underdrive and ported TB

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