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Old 10-06-2012, 11:46 PM   #1
I ARMY RECON I
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Default Why DOD delete?

So I'm a new g8 owner and I have a question... Why should I/someone do a DOD delete? Isn't the DOD there for better gas mileage? I am new to all this computer stuff my new ride has. Lol
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Old 10-07-2012, 01:28 AM   #2
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Yes, it is. Gas mileage is what some want and max power is what others want.
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Old 10-07-2012, 03:05 AM   #3
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I plan on deleting DoD just because I don't trust it for reliability. Some people have done cams and kept DoD though. Most people don't care about the 2mpg difference especially when a good tune can gain that back and increase power.
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Old 10-07-2012, 09:51 AM   #4
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@neverending so if/ when I change my cam I should get the dod delete and get a good tune?
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Old 10-07-2012, 10:40 AM   #5
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@Army,

The reason why people go with a DoD delete is that the reliability of the components is always questionable. I had my lifters fail on me causing the Lifters, Camshaft, and a few other components need to be replaced at GM's expense (Covered under warranty). If you are thinking about changing your cam you are left with 2 options.

1) Custom grind DOD spec cam. You would want to reach out to the few other members that have went this route

2) DOD delete package with camshaft. A few vendors sell them as kits and have a good reputation with their packages. Livernois for instance has their package for ~$1600 with all the DOD delete stuff with a camshaft.
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Old 10-07-2012, 10:49 AM   #6
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The questionable components are the original Eaton lifters. most class the replacement Delphi lifters are reliable.
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Old 10-07-2012, 11:00 AM   #7
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The real question should be why NOT do a DOD delete....


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Old 10-07-2012, 11:01 AM   #8
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@masterpat Thank you for some real input I don't understand the DOD fully. I used to be a front end mechanic but I dont have a full concept on how the DOD works... But what I am understanding is that it is similair to hondas vtech in a sense but opposite of more horse. Does that seem correct?
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Old 10-07-2012, 12:54 PM   #9
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DOD is built into our engines. The camshaft and lifters as well as some other components all work together to shut down 4 cylinders when cruising in order to bump up fuel economy. You can 'tune it out' if you have a custom tune on your car (Superchips Cortex 2950 works fine for small mods, until you start playing with headers and other components) and can Turn DOD/AFM off. There are actual hard components though that people remove -- Lifters, Camshaft, Valley Cover, Cam Sprocket, etc... -- that are the actual parts that help DOD/AFM function
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Old 10-07-2012, 01:23 PM   #10
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Quote:
Originally Posted by I ARMY RECON I View Post
@masterpat Thank you for some real input I don't understand the DOD fully. I used to be a front end mechanic but I dont have a full concept on how the DOD works... But what I am understanding is that it is similair to hondas vtech in a sense but opposite of more horse. Does that seem correct?
This thread has an awesome write-up on the L76, including how AFM works. FWIW, I'm one of the many here who have had the AFM lifters fail, resulting in a new cam and valvetrain at about 30K miles, covered under warranty of course. I'm just over 50K now with no issues, but still plan on a DOD delete at somepoint...

http://www.g8board.com/forums/showthread.php?t=22509
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Old 10-07-2012, 07:39 PM   #11
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Some of us have kept the DOD delete AND done high horsepower mods. My tuner/installer (G8-4-Speed) says I have the later and better DOD/AFM lifters; mine have been fine now for 94k miles (40k with the supercharger and DOD compatible cam). He kept his as well and has had no issues so far. Some have had problems with the Eaton lifters while others have had problems with the non-DOD lifters as well so I think it's a coin-toss as far as reliability but that's just my impression based on what I've seen and experienced.
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Old 10-07-2012, 07:44 PM   #12
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Quote:
Originally Posted by Neverending View Post
I plan on deleting DoD just because I don't trust it for reliability. Some people have done cams and kept DoD though. Most people don't care about the 2mpg difference especially when a good tune can gain that back and increase power.
Reliability you say? No issues here, could probably crack out 30+ more horsepower if I wanted to lean on her. DOD has been in place over the past 4 years and 30k miles of boost. Not one issue.
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Old 10-07-2012, 07:55 PM   #13
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Great thread, lots of useful info. I may try a DOD delete and see how much difference it makes MPG wise with the different tunes.
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Old 10-07-2012, 08:22 PM   #14
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You'll notice a bigger change in MPG by adjusting your right foot than deleting the DOD or turning it off.
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Old 10-08-2012, 08:35 AM   #15
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When I had my GT I had it tuned out. Car ran and felt MUCH better. Only lost 1.5 mpg. If I had kept it, I would have done the delete, especially after hearing about all the lifter issues.
In the end, I did the ultimate DOD delete. I bought a GXP!
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Old 10-08-2012, 08:54 AM   #16
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My take on this is; I bought a V8 car because I wanted a V8 car, not a V8 sometimes car, so I turned off my AFM.
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Old 10-08-2012, 09:48 AM   #17
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Quote:
Originally Posted by '08 G8 GT View Post
This thread has an awesome write-up on the L76, including how AFM works. FWIW, I'm one of the many here who have had the AFM lifters fail, resulting in a new cam and valvetrain at about 30K miles, covered under warranty of course. I'm just over 50K now with no issues, but still plan on a DOD delete at somepoint...

http://www.g8board.com/forums/showthread.php?t=22509
Thanks for the link! Now I have to explain to the wife lol
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Old 10-08-2012, 03:05 PM   #18
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DOD is turned off when you go into sport mode right?
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Old 10-08-2012, 03:47 PM   #19
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Manual mode only.
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Old 10-11-2012, 12:25 PM   #20
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Before GM had the Delphi lifter to replace to defective Eaton lifter, DOD delete was your only performance choice. Now you have a choice. If you are building something really wild and not a DD. Deleting AFM is a must.
Many have proven you can have a strong street/strip car and keep DOD.
If you still have Eaton Lifters, most delete DOD when they swap cams.
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