Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Phastek Performance
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 07-22-2008, 12:52 AM   #1
tsg1391
 
Drives: 79 formula 'bird, 5th gen soon
Join Date: Jul 2008
Location: oklahoma
Posts: 247
can we turn afm on/off? or delete it??

like the title says, i want the ss with auto, but i dont want afm...

everyone on the g8 forums say it sounds funny when the cylinders de-activate when you have a loud exhaust. and if i am buying a v8 camaro, i want a loud exhaust!! gah, i wish i could get an auto with ls3

does anyone know if the afm only kicks in past a certain speed? or after a certain time of going the same speed?
tsg1391 is offline   Reply With Quote
Old 07-22-2008, 12:58 AM   #2
The_Blur
Jayhawk USN
 
The_Blur's Avatar
 
Drives: Demon SS
Join Date: Nov 2007
Location: San Diego
Posts: 14,622
Send a message via AIM to The_Blur
It only kicks in when you hit the gas. You won't notice any lag. It's a very impressive feature.
The_Blur is offline   Reply With Quote
Old 07-22-2008, 01:08 AM   #3
tsg1391
 
Drives: 79 formula 'bird, 5th gen soon
Join Date: Jul 2008
Location: oklahoma
Posts: 247
i am talking about afm, active fuel management. im not trying to sound rude, but i dont see the point of it cutting cylinders when you accellerate?
tsg1391 is offline   Reply With Quote
Old 07-22-2008, 01:20 AM   #4
Mr. Wyndham
I used to be Dragoneye...
 
Mr. Wyndham's Avatar
 
Drives: 2014 Camaro 1LE
Join Date: Jan 2007
Location: Buffalo, NY
Posts: 26,412
Send a message via AIM to Mr. Wyndham
Quote:
Originally Posted by tsg1391 View Post
i am talking about afm, active fuel management. im not trying to sound rude, but i dont see the point of it cutting cylinders when you accellerate?
That's good, because niether does the system.

That's not how it works...when you're cruising at highway speeds or decelerating, the engine will shut half of itself down; saving fuel. When you idle or when you accelerate; AFM is inactive, and you can barely feel it switching on/off.
__________________
"Keep the faith." - - Read Before You Post.

Mr. Wyndham is offline   Reply With Quote
Old 07-22-2008, 01:21 AM   #5
pinkcamaro10
2G1FC1EV1A9110079
 
pinkcamaro10's Avatar
 
Drives: 2010 2LT/RS, 2013 2SS/RS 1LE
Join Date: Jun 2008
Location: Arizona
Posts: 4,757
Send a message via MSN to pinkcamaro10
hmm maybe you are confused or i am.

it doesnt cut cylinders when you accelerate.

when you are just doing normal daily driving it just uses 4 instead of 8, and then when you accelerate it will use all 8..



arghhh dragon you beat me.
__________________
pinkcamaro10 is offline   Reply With Quote
Old 07-22-2008, 01:22 AM   #6
The_Blur
Jayhawk USN
 
The_Blur's Avatar
 
Drives: Demon SS
Join Date: Nov 2007
Location: San Diego
Posts: 14,622
Send a message via AIM to The_Blur
Quote:
Originally Posted by Dragoneye View Post
That's good, because niether does the system.

That's not how it works...when you're cruising at highway speeds or decelerating, the engine will shut half of itself down; saving fuel. When you idle or when you accelerate; AFM is inactive, and you can barely feel it switching on/off.
If you really wanted a 4-banger, you'd be looking at a Cobalt. AFM does just what Dragoneye said. It activates when you're on the gas. If you hit cruise or idle at a speed, it will maintain speed with less cylinders active. This saves a considerable amount of fuel.
The_Blur is offline   Reply With Quote
Old 07-22-2008, 03:28 AM   #7
tsg1391
 
Drives: 79 formula 'bird, 5th gen soon
Join Date: Jul 2008
Location: oklahoma
Posts: 247
dragon, i meant to quote the blur when he said it only kicks in when i hit the gas... i know what afm does/is, i am just concerned about exhaust note. maybe im just freaking out
tsg1391 is offline   Reply With Quote
Old 07-22-2008, 03:37 AM   #8
Mindz
E.B.A.H.
 
Mindz's Avatar
 
Drives: you wild...
Join Date: Mar 2007
Location: In the happy padded room wearing a jacket that makes me hug myself...
Posts: 18,257
Go test drive a G8. I believe they have AFM on one or more of the models
__________________
Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1
Mindz is offline   Reply With Quote
Old 07-22-2008, 05:10 AM   #9
TAG UR IT
www.Camaro5store.com
 
TAG UR IT's Avatar
 
Drives: 2014 ZL1 #705
Join Date: Jul 2006
Location: SA, Texas
Posts: 26,565
and don't let afm make up your mind about buying a car. AFM is an excellent thing that YOU will get on your auto. I can't get it since I'm getting the LS3 M6. If it really does sound that bad after you test drive it, then just change out the exhaust later on.
TAG UR IT is offline   Reply With Quote
Old 07-22-2008, 08:59 AM   #10
Jak
 
Jak's Avatar
 
Drives: 03 Dodge Dakota
Join Date: Jul 2007
Location: New York
Posts: 627
I test drove a G8 GT and with the AFM you don't even feel or hear any difference. Then like Dragon says soon as you hit the gas it deactivates and your running on all 8 cylinders, let off the gas and coast or idle it activates an your on four. Personally I'm a little disappointed at the gap in horses but it's not anything that'll change my mind.
Jak is offline   Reply With Quote
Old 07-22-2008, 10:17 AM   #11
SilverTurtle
Reality Check Specialist
 
SilverTurtle's Avatar
 
Drives: '02 Z28, 2012 45th SS
Join Date: Jan 2007
Location: ATX
Posts: 1,725
Send a message via AIM to SilverTurtle Send a message via Yahoo to SilverTurtle
I have been assured that you can delete the AFM from the program and change the exhaust to make it as loud or quiet as you'd like... so fear not, auto lovers of the world, your car can still be setup like you want it... its just going to have to be done in the aftermarket
__________________
got tequila?
SilverTurtle is offline   Reply With Quote
Old 07-22-2008, 10:38 AM   #12
EllwynX


 
EllwynX's Avatar
 
Drives: 2010 Camaro SS
Join Date: May 2006
Location: Southern NJ
Posts: 2,260
Quote:
Originally Posted by Jak View Post
I test drove a G8 GT and with the AFM you don't even feel or hear any difference. Then like Dragon says soon as you hit the gas it deactivates and your running on all 8 cylinders, let off the gas and coast or idle it activates an your on four. Personally I'm a little disappointed at the gap in horses but it's not anything that'll change my mind.
I wasn't aware that AFM deactivated the cylinders when you idle'd or let off the gas.

I thought it just activated when you were at highway speeds.

If it also works as you've described, that makes me want it even more.
EllwynX is offline   Reply With Quote
Old 07-22-2008, 11:36 AM   #13
the_saint
Member
 
the_saint's Avatar
 
Drives: rusty
Join Date: May 2008
Location: bucket
Posts: 74
with a hand held programmer you should be able to deactivate it just as they do on the hemi's.
__________________
the_saint is offline   Reply With Quote
Old 07-22-2008, 12:01 PM   #14
Jak
 
Jak's Avatar
 
Drives: 03 Dodge Dakota
Join Date: Jul 2007
Location: New York
Posts: 627
It just kicks in when the cars on a light load, crusing speeds like on the highway or crusing up and down main street, anywhere that your not pushing down on the gas. Soon as you step on the gas then all eight kick in. 'least that's my understanding on how it works after speaking with mechanics and reading up on it.




Quote:
Originally Posted by EllwynX View Post
I wasn't aware that AFM deactivated the cylinders when you idle'd or let off the gas.

I thought it just activated when you were at highway speeds.

If it also works as you've described, that makes me want it even more.
Jak is offline   Reply With Quote
Old 07-22-2008, 12:57 PM   #15
jdpickering
 
Drives: 99 Monte Carlo Z34
Join Date: Jul 2008
Location: Indiana
Posts: 67
Quote:
garfin: Why no AFM on the maual transmission V8?

DougHoulihan: the AFM is done elecronically as we move from 8 cylinder to 4 cylinder mode or 4 cylinder to 8 cylinder mode. The manual transmission is mechanically in specific gears and does not allow us to electronically change from 4 cylinder to 8 cylinder mode.
Wonder what this will do to the EPA Fuel Milage for the Manuals. If you don't want AFM get a Manual
jdpickering is offline   Reply With Quote
Old 07-22-2008, 08:57 PM   #16
greysteel_M6
 
Drives: 00' SS
Join Date: Mar 2008
Location: Abilene, TX
Posts: 29
You'll have to tune it out, Idk if it will be available on hand helds though.
greysteel_M6 is offline   Reply With Quote
Old 07-23-2008, 12:06 AM   #17
DGthe3
Moderator.ca
 
DGthe3's Avatar
 
Drives: 05 Grand Am GT
Join Date: Jul 2007
Location: Niagara, Canada
Posts: 23,084
Send a message via MSN to DGthe3
There is an easy way to bypass AFM: stay on the gas. It will never deactivate the other 4 cylinders.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________
Originally Posted by FbodFather
My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors......
........and HE WOULD KNOW!!!!
__________________

Camaro Fest sub-forum
DGthe3 is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
AFM v8 Engine The80sman Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 23 06-13-2008 11:19 AM
Camaro ls3 news...true or false? Dark Knight Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 74 06-05-2008 06:29 PM


All times are GMT -5. The time now is 04:17 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.