Delete AFM?

[BlkYukon]

as far as using a tuner to load a custom tune done by someone else I don't think this would work but IDK

That's exactly how it works with guys like Lew

 

[iLikeEggs]

One of the reasons I went with the Superchips was because of the free updates. Easy interface on PC.

 

[Sarge]

Bully Dog gt. Afm off i get 1.5 better avg mpg

 

[conchasjim]

I guess I'm in the dark here. What's AFM? What's it do?

 

[992dr]

Active fuel management or DOD displacement on demand
Short version = Turns your V8 into a 4 cylinder at cruising speed/light loads to help with fuel efficiency.

 

[conchasjim]

Active fuel management or DOD displacement on demand
Short version = Turns your V8 into a 4 cylinder at cruising speed/light loads to help with fuel efficiency.

Thanks. Mine seems to work fine, so why disable it?

 

[992dr]

Any time

They use collapsible lifters which are prone to fail and also consume oil are the two major issues. Which in turn will lead into other issues do to lack of oil.

 

[sumo]

I'll tell you one big difference since delete afm. No more vibration when in 4 cyc mode nor awkward exhaust note change when switching from 4 to 8 and vice versa

 

[93blkongreenpro]

I'll tell you one big difference since delete afm. No more vibration when in 4 cyc mode nor awkward exhaust note change when switching from 4 to 8 and vice versa

That's the main reason I disabled it. When I bought the truck, I thought something was wrong with it when on the highway. It seems like a waste, but in the grande scheme of things, it's just another trick to look better on paper.

Just like E85. It looks great on paper bc since you are only using 15% gas, theoretically, you get "better gas mileage" with the gas being used. In real life, for $.20 less a gallon, you get ~30% worse fuel milage.

Combine E85 and AFM on paper, this is a "fuel efficient" vehicle.


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[conchasjim]

Ok, thanks. Mines working fine. No vibration or rough idle or oil consumption. Guess I'll leave it for now.