DOD/AFM/DOD Delete.. Someone enlighten me.. Please! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SixGracing · 03-05-2012, 04:59 AM

It seems to be common place for anyone upgrading or tuning an L99 to disable the AFM and a lot of the time doing a DOD delete which basically converts the L99 to an LS3. My question is why would Chevy put that crap on the Auto's?

I mean fuel management, running on 4 cylinders and fuel economy? Isn't that what the Volt and Prius are for? People (at least most people) buying an American Muscle Sports car like the Camaro SS aren't after fuel economy. Not to mention I've seen very little gain using the AFM posted by others. So why have it? If you are going to install LTH's, High flow cats, axle-back, etc, the AFM will drive you bonkers with all of it's sputtering, droning, farting and burping going on under the floor boards. I have SLP LTH's with the High Flow cats and PowerFlo axle back and when the AFM kicks in it makes my car sound like a Corolla with pipes. As soon as I touch the throttle it sputters and finds its way back into a normal sounding V8. It's very annoying. Don't get me wrong, at WOT the car sounds like a raped ape on steroids. It's just when you're cruising that the AFM/DOD will constantly change the tone/sound of your engine.

So my suggestion to anyone who owns or plans on owning an L99, get rid of the AFM and do a DOD Delete. You will be much happier, you car will run much smoother and you won't compromise anything other than your sanity if you don't.

Anyone else have anything to add?

Just my two cents..

babaron · 03-05-2012, 05:41 AM

The short answers to your questions are:

GM puts the AFM on them to meet CAFE standards (Corporate Average Fuel Economy) and avoid millions of dollars in federal fines.

A lot of us don't like it but don't disable it because doing so will void the powertrain warranty, or at least COULD void it.

But in the end, you're right, IT SUCKS!!

SixGracing · 03-05-2012, 06:01 AM

Quote:

Originally Posted by babaron

The short answers to your questions are:

GM puts the AFM on them to meet CAFE standards (Corporate Average Fuel Economy) and avoid millions of dollars in federal fines.

A lot of us don't like it but don't disable it because doing so will void the powertrain warranty, or at least COULD void it.

But in the end, you're right, IT SUCKS!!

Hmm, well if that were the case then why does the Manual not have it?

*The Stig* · 03-05-2012, 06:03 AM

Quote:

Originally Posted by SixGracing

Hmm, well if that were the case then why does the Manual not have it?

It does. The manual has CAGS. Also known as skip-shift.

SixGracing · 03-05-2012, 07:13 AM

Quote:

Originally Posted by stieger

It does. The manual has CAGS. Also known as skip-shift.

Not familiar with CAGS. How does it affect fuel performance and does it cause the same issues the autos see with the grumbling and droning in the exhaust? Just curious..

JoshBobGuptaMarley · 03-05-2012, 07:15 AM

It's all about taxes and the government. Enjoy it as it represents freedom and democracy

.

E.T. · 03-05-2012, 07:39 AM

Quote:

Originally Posted by JoshBobGuptaMarley

It's all about taxes and the government. Enjoy it as it represents freedom and democracy

.

Yep. Just the usual government BS. How do manufacturers like Jeep get around this? Do they even make one vehicle that gets decent mileage? My V6 Jeep is worse than my Camaro:(

Anyway, I think AFM is much worse than CAGS. While CAGS may be annoying, I don't think it causes all the weird sounds (farting) and vibrations, and from what I've read, it can be disabled by a $20 device. Us auto guys are stuck dealing with it, or tuning it out. I got rid of mine, and I'm so glad I did. I upgraded from my V6 for a V8, not a 4-banger. Govt. regs or not, AFM has NO place on cars like this.

*The Stig* · 03-05-2012, 07:49 AM

Quote:

Originally Posted by SixGracing

Not familiar with CAGS. How does it affect fuel performance and does it cause the same issues the autos see with the grumbling and droning in the exhaust? Just curious..

Not really. CAGS basically locks you out of 2nd gear, forcing you to shift from 1st to 4th.

cmore · 03-05-2012, 09:25 AM

Quote:

Originally Posted by babaron

The short answers to your questions are:

GM puts the AFM on them to meet CAFE standards (Corporate Average Fuel Economy) and avoid millions of dollars in federal fines.

A lot of us don't like it but don't disable it because doing so will void the powertrain warranty, or at least COULD void it.

But in the end, you're right, IT SUCKS!!

Looks like if the auto gets better mileage with it, the std would to. Wonder why GM did not force it on the manual owners?

*The Stig* · 03-05-2012, 09:29 AM

Quote:

Originally Posted by babaron

The short answers to your questions are:

GM puts the AFM on them to meet CAFE standards (Corporate Average Fuel Economy) and avoid millions of dollars in federal fines.

A lot of us don't like it but don't disable it because doing so will void the powertrain warranty, or at least COULD void it.

But in the end, you're right, IT SUCKS!!

Only way to disable AFM is to get a tune, and a tune voids your powertrain warranty.

edog · 03-05-2012, 09:46 AM

The afm also saved you from paying the gas guzzler tax like you pay on the challenger. It is afm option. I was getting 26 to 27 mpg before tuning it out, and 22 to 24 mpg after the tune. I have mods that have changed things a well and I am glad I have removed it, but still very happy to not pay gg tax.

cmore · 03-05-2012, 10:19 AM

Quote:

Originally Posted by edog

The afm also saved you from paying the gas guzzler tax like you pay on the challenger. It is afm option. I was getting 26 to 27 mpg before tuning it out, and 22 to 24 mpg after the tune. I have mods that have changed things a well and I am glad I have removed it, but still very happy to not pay gg tax.

Wow, 26-27 mpg. Mine is stock and not driven all that hard but gets about 22mpg any way!

ParisTNDude · 03-05-2012, 10:41 AM

CAGS is a gas saver...makes you shift sooner out of the gas guzzling first gear. I kept mine active for 3 years with my C5 Vette and it never bothered me. The manuals don't have the AFM because the solid mechanical linkage of the manual drive train would have caused lots of drone at steady speed. The automatic with a hydraulic hook up to the rear gears absorbs some of that, but still is obnoxious. I could never get any better than 26 out of mine before my tune and now 23-24 is tops.

2SSRSinBama · 03-05-2012, 07:16 PM

i've had my tune for almost 2500 miles and my gas mileage hasn't moved a bit... 18.1mpg average, but I never put it on the highway, its a weekend car and sees the city lights almost always...

Brianskeet · 03-06-2012, 12:01 AM

I think they put it on there so I could notice how nice it is to have it GONE!

edog · 03-07-2012, 07:44 AM

Quote:

Originally Posted by cmore

Wow, 26-27 mpg. Mine is stock and not driven all that hard but gets about 22mpg any way!

What part of the country and driving conditions have a great deal to do with it. I did not realize how much til I started driving around the country with mine. I get better mileage in the south east for some reason.

OBSSEST · 03-09-2012, 12:22 PM

Quote:

Originally Posted by SixGracing

It seems to be common place for anyone upgrading or tuning an L99 to disable the AFM and a lot of the time doing a DOD delete which basically converts the L99 to an LS3.

I wish it were this easy to convert my L99 to an LS3. Unfortunately, there are a few more internals that are different.

SixGracing · 03-11-2012, 10:26 PM

Quote:

Originally Posted by OBSSEST

I wish it were this easy to convert my L99 to an LS3. Unfortunately, there are a few more internals that are different.

I know the VVT cam, DOD system, valley tray etc are a good start. I believe the L99 has different piston compression ratios? From what I've heard though, and I could be wrong, is the L99 is an LS3 with those added items mentioned above. Get rid of them and essentially gain and LS3.. Correct me if I'm wrong.

03-05-2012, 04:59 AM	#1
SixGracing The Reaper Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011 Location: West Haven, UT Posts: 631	DOD/AFM/DOD Delete.. Someone enlighten me.. Please! It seems to be common place for anyone upgrading or tuning an L99 to disable the AFM and a lot of the time doing a DOD delete which basically converts the L99 to an LS3. My question is why would Chevy put that crap on the Auto's? I mean fuel management, running on 4 cylinders and fuel economy? Isn't that what the Volt and Prius are for? People (at least most people) buying an American Muscle Sports car like the Camaro SS aren't after fuel economy. Not to mention I've seen very little gain using the AFM posted by others. So why have it? If you are going to install LTH's, High flow cats, axle-back, etc, the AFM will drive you bonkers with all of it's sputtering, droning, farting and burping going on under the floor boards. I have SLP LTH's with the High Flow cats and PowerFlo axle back and when the AFM kicks in it makes my car sound like a Corolla with pipes. As soon as I touch the throttle it sputters and finds its way back into a normal sounding V8. It's very annoying. Don't get me wrong, at WOT the car sounds like a raped ape on steroids. It's just when you're cruising that the AFM/DOD will constantly change the tone/sound of your engine. So my suggestion to anyone who owns or plans on owning an L99, get rid of the AFM and do a DOD Delete. You will be much happier, you car will run much smoother and you won't compromise anything other than your sanity if you don't. Anyone else have anything to add? Just my two cents.. __________________

03-05-2012, 05:41 AM	#2
babaron Totally into it Drives: '67 427vette/'11 Pacecar/'02 BMW ci Join Date: Feb 2011 Location: SW Ohio Posts: 490 View My Garage	The short answers to your questions are: GM puts the AFM on them to meet CAFE standards (Corporate Average Fuel Economy) and avoid millions of dollars in federal fines. A lot of us don't like it but don't disable it because doing so will void the powertrain warranty, or at least COULD void it. But in the end, you're right, IT SUCKS!! __________________ ____________________________________THERE MUST BE A SUPPORT GROUP FOR THIS ADDICTION. AM I IN THE RIGHT PLACE?

03-05-2012, 07:15 AM	#6
JoshBobGuptaMarley Emerald Coast Camaros Drives: '12 2SS/RS LS3 GBA Join Date: Sep 2011 Location: PanamaCityBeach,Florida Posts: 1,401 View My Garage	It's all about taxes and the government. Enjoy it as it represents freedom and democracy . __________________ Muffler Delete, Cold Air Inductions intake, Technostalgia Sequential LED Tail Lights, Vmax CNC Ported TB, RX Catch Can, AAC LED Interior Lights (Aqua)

03-05-2012, 09:46 AM	#11
edog Drives: 2010 2SS/RS IOM Join Date: Oct 2008 Location: F'BURG VA Posts: 3,300 View My Garage	The afm also saved you from paying the gas guzzler tax like you pay on the challenger. It is afm option. I was getting 26 to 27 mpg before tuning it out, and 22 to 24 mpg after the tune. I have mods that have changed things a well and I am glad I have removed it, but still very happy to not pay gg tax. __________________ Doug Thorley Tri-Y LT/cat back, Ported TB, Halltech CAI, Pedders sways, endlinks, Drop Springs, Tuned by TandTPerformance 371HP/383TQ

03-05-2012, 10:41 AM	#13
ParisTNDude Drives: 2006 Corvette Join Date: Apr 2010 Location: Paris, TN Posts: 1,911 View My Garage	CAGS is a gas saver...makes you shift sooner out of the gas guzzling first gear. I kept mine active for 3 years with my C5 Vette and it never bothered me. The manuals don't have the AFM because the solid mechanical linkage of the manual drive train would have caused lots of drone at steady speed. The automatic with a hydraulic hook up to the rear gears absorbs some of that, but still is obnoxious. I could never get any better than 26 out of mine before my tune and now 23-24 is tops. __________________ Current ride: 2006 Corvette, LG long tube headers, HF cats, Xpipe, Vararam, Vmax ported throttle body, Z06 bi-mode axle backs, Fast LSXR 102 intake, DynoSpeed tune Dragtimes link: http://www.dragtimes.com/Chevrolet-C...html?r=1"]2010

03-05-2012, 07:16 PM	#14
2SSRSinBama Drives: 2010 2SS/RS Camaro CGM Join Date: Aug 2011 Location: "The Shoals" Alabama Posts: 718	i've had my tune for almost 2500 miles and my gas mileage hasn't moved a bit... 18.1mpg average, but I never put it on the highway, its a weekend car and sees the city lights almost always... __________________ 2010 Camaro SS L99... has a few mods

03-06-2012, 12:01 AM	#15
Brianskeet Brianskeet Drives: RJTC 1SS RS L99 Join Date: Sep 2010 Location: Crestview FL Posts: 815 View My Garage	I think they put it on there so I could notice how nice it is to have it GONE! __________________ ARH 1 7/8 coated LT, High flows, Corsa L99 exhaust, Vmax CNC throttle body, Elite Engineering catch can and tunnel brace, C.A.I. Apex Washer relocation and scoop, Janetty Tune, MSD wires, DEI heat shields, RB rotors and pads, Mike the powder coater calipers, pedders lines, Forgestar F14's, Gorilla nutz, MTI spoiler finished by Gary, Gary's Customz Bow Ties, Side Markers and Tails tinted, Bezels matte black, Badges deleted, Windows Tinted, AAC DRL P13W lights, AAC tinted LED reverse lights, AAC LED interior lights, RPI match painted DRL Bezels, Lis plate frame, Lloyds mats

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