Four cylinder mode
Safety Car
Joined: Jan 2015
Posts: 3,941
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From: Northern Virginia
There is a device you can plug into the ODB port that disables AFM mode, but it will apparently drain the battery if left in for a long time while the car is not used. A Google search turned up "Range AFM Disable."
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Joined: Feb 2006
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From: DFW Area TX
<p></p><p>Still, the NPP exhaust valves will close under certain RPM/load conditions. The same settings exist on the A6/A8, but AFM works differently on the automatics (it is much more intrusive). On a manual, AFM only works in ECO mode. On the automatics, it works in all modes. Only manual mode sifting on the automatics will disable AFM on a stock vehicle.</p><p> </p><p>Beside the Range disabler device, it can also be eliminated with a tune.</p><p> </p>
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Safety Car
Joined: Jan 2015
Posts: 3,941
Likes: 499
From: Northern Virginia
And even the NPP valves aren't always open, no matter what you set in the touch screen. Pulling the fuse will keep the NPP valves open all the time, but not the AFM valves,