AFM delete...3 ways
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 3,382
Likes: 250
AFM delete...3 ways
Doing a search on AFM DOD delete I find 3 ways to delete:
1) The most popular is Ranger module. As a racer it is klinda worky for me and I have something else for my OBD2 port.
2) Doug ECS: AFM can be tuned out. We can send you a Diablo In Tune programmer that can take care of that for you without ruining your factory warranty.
3) Livernois mechanical delete gets rid of the DOD lifters and perhaps what joseC5 says about the OEM cam.
"On the Corvette, the camshaft has two different lobe profiles with the lobes for the AFM lifters having "softer" ramps to accelerate/de-accelerate the heavier lifters. GM claims that it doesn't hurt airflow but that makes no sense. If the "softer" ramps don't hinder airflow, then why do they have the other eight lifters with a different profile that opens/closes the valve at a faster rate." JoesC5
Livernois Motorsports Exclusive DOD delete system
Livernois Motorsports Exclusive Performance Camshaft
Livernois Motorsports Exclusive Cam Phaser Limiter
Livernois Motorsports Exclusive Upgraded Valve Springs package
Does anyone have experience with the full mechanical delete of the AFM??? I'm looking at this for a C7 racecar and it sounds like mechanical delete increases reliability.
1) The most popular is Ranger module. As a racer it is klinda worky for me and I have something else for my OBD2 port.
2) Doug ECS: AFM can be tuned out. We can send you a Diablo In Tune programmer that can take care of that for you without ruining your factory warranty.
3) Livernois mechanical delete gets rid of the DOD lifters and perhaps what joseC5 says about the OEM cam.
"On the Corvette, the camshaft has two different lobe profiles with the lobes for the AFM lifters having "softer" ramps to accelerate/de-accelerate the heavier lifters. GM claims that it doesn't hurt airflow but that makes no sense. If the "softer" ramps don't hinder airflow, then why do they have the other eight lifters with a different profile that opens/closes the valve at a faster rate." JoesC5
Livernois Motorsports Exclusive DOD delete system
Livernois Motorsports Exclusive Performance Camshaft
Livernois Motorsports Exclusive Cam Phaser Limiter
Livernois Motorsports Exclusive Upgraded Valve Springs package
Does anyone have experience with the full mechanical delete of the AFM??? I'm looking at this for a C7 racecar and it sounds like mechanical delete increases reliability.
I'm Batman..
Joined: Apr 2014
Posts: 6,143
Likes: 921
From: Lehigh Acres FL
Tech Contributor
In order to truly delete DOD, you'll want to install a non DOD cam, non DOD lifters, plug the DOD towers, and also turn it off in the tune. I did this when I rebuilt my motor..
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 3,382
Likes: 250
http://media.chevrolet.com/media/us/...16-camaro.html
(read 5th paragraph up from dimensions table)
This press release says the "manual" gearbox Camaro with v8 does not have AFM. This means GM has an LT1 engine componants stock to delete the AFM/DOD. Why don't people talk about an AFM delete with reliable OEM parts used in the manual gearbox camaro LT1 motors????
(read 5th paragraph up from dimensions table)
This press release says the "manual" gearbox Camaro with v8 does not have AFM. This means GM has an LT1 engine componants stock to delete the AFM/DOD. Why don't people talk about an AFM delete with reliable OEM parts used in the manual gearbox camaro LT1 motors????
I'm Batman..
Joined: Apr 2014
Posts: 6,143
Likes: 921
From: Lehigh Acres FL
Tech Contributor
http://media.chevrolet.com/media/us/...16-camaro.html
(read 5th paragraph up from dimensions table)
This press release says the "manual" gearbox Camaro with v8 does not have AFM. This means GM has an LT1 engine componants stock to delete the AFM/DOD. Why don't people talk about an AFM delete with reliable OEM parts used in the manual gearbox camaro LT1 motors????
(read 5th paragraph up from dimensions table)
This press release says the "manual" gearbox Camaro with v8 does not have AFM. This means GM has an LT1 engine componants stock to delete the AFM/DOD. Why don't people talk about an AFM delete with reliable OEM parts used in the manual gearbox camaro LT1 motors????
Burning Brakes
Joined: Jun 2012
Posts: 1,029
Likes: 88
From: NJ
I did a muffler mod on my C7 M7 and removed the AFM from the axle back pipe. If I disable DOD in the tune, will I need to do anything else? I'm changing the lifters later when I do the heads.
Last edited by phantom1; Mar 21, 2019 at 05:37 PM.
Burning Brakes
Joined: Oct 2014
Posts: 1,057
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Dont quote me, but, I believe you will still get a CEL. Check with the guys that track. I also think they there is a way to get the ECM to ignore the missing valves in HPTuners. However, it may take more credits. Chassis ECM I think.
Burning Brakes
Joined: Jun 2012
Posts: 1,029
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From: NJ
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I'm Batman..
Joined: Apr 2014
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From: Lehigh Acres FL
Tech Contributor
that sounds right from what i know. But I don’t know what to modify for that..
I'm Batman..
Joined: Apr 2014
Posts: 6,143
Likes: 921
From: Lehigh Acres FL
Tech Contributor
you don’t need to disable DoD entirely. You just need to set the AFM exhaust valves to not alert to a problem condition. This can be done by tuning the C304 module in HPT and requires two separate credits to do. If you need to know how to do that Pm me and I’ll send you the link to the guide I wrote on it.
Burning Brakes
Joined: Jan 2019
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From: Lake Placid, FL
I'm a bit confused here. Does it need to be deleted on an M7 or just stay out of Eco mode? I'm about to install my SC soon. Would turning it off in the tune be sufficient?
Is most of this info for the auto cars?
Is most of this info for the auto cars?
Burning Brakes
Joined: Jun 2012
Posts: 1,029
Likes: 88
From: NJ
I cut and removed the AFM valves from my exhaust, and use a straight pipe. That's why I need to either disable AFM, or connect the sensor back. I have the M7. With the M7, just stay out of eco mode. The auto cars are different, they stay in eco mode, unless you drive in manual mode.
Burning Brakes
Joined: Jun 2012
Posts: 1,029
Likes: 88
From: NJ
HOW TO: Disable AFM Exhaust Valve Actuators with HP Tuners
you don’t need to disable DoD entirely. You just need to set the AFM exhaust valves to not alert to a problem condition. This can be done by tuning the C304 module in HPT and requires two separate credits to do. If you need to know how to do that Pm me and I’ll send you the link to the guide I wrote on it.
Thanks for your help
Last edited by phantom1; Mar 21, 2019 at 05:57 PM.
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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A8 it will turn on in all modes, unless you are in manual shift position.
Last edited by vader86; Mar 21, 2019 at 06:05 PM.
4th Gear
Joined: Feb 2020
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What about the reliability of the afm components? The lifters and push rods? Are they failing?
if you delete the afm valves in the exhaust system and use hp tuners to clear the codes, does that keep afm from engaging?
Is afm the same as eco mode?
Im a beginner trying to get a grasp on things.
if you delete the afm valves in the exhaust system and use hp tuners to clear the codes, does that keep afm from engaging?
Is afm the same as eco mode?
Im a beginner trying to get a grasp on things.
Team Owner
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
What about the reliability of the afm components? The lifters and push rods? Are they failing? They have for a few folks, not common. Requires a top end rebuild or new motor.
if you delete the afm valves in the exhaust system and use hp tuners to clear the codes, does that keep afm from engaging? No, you have to use the Range device to keep the computer from engaging it, or a tune. If its a stick, just don't go to Eco mode and it never will.
Is afm the same as eco mode? Almost, Eco probably just makes it go to V4 quicker in an A8. But in a stick they are basically identical.
if you delete the afm valves in the exhaust system and use hp tuners to clear the codes, does that keep afm from engaging? No, you have to use the Range device to keep the computer from engaging it, or a tune. If its a stick, just don't go to Eco mode and it never will.
Is afm the same as eco mode? Almost, Eco probably just makes it go to V4 quicker in an A8. But in a stick they are basically identical.
Burning Brakes
Joined: Oct 2014
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That would be a good question for Katech. I doubt very much. 2 lbs maybe would be my guess. They look cool. I’ll spend my play money on stuff that will add power. I can buy a couple of SC pulleys for that.
Melting Slicks
Joined: Apr 2016
Posts: 3,109
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From: CA
Hmm, except Most people doing this already have a pulley but I get your drift.
