Quote:
Originally Posted by 2SS Capt
But in city and local driving AFM really shouldn't kick in, it usually disables the cylinders during low power, highway cruising... I never saw mine go into V4 mode around town, it was always on light pedal, highway cruising...
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Indeed, afm only impacts highway cruising at light engine load for sustained periods of time. Not generally something you would care about showing off during or paying attention to the engine sound...but rather listening to music or talking to people or cursing at people in front of you for not using cruise control and making you hit the brake.
I would not flat out disable it because while sometimes it's only a little bit of an improvement since v4 mode has it's own range of fuel use...it can be much better than 2mpg and over the life of the car that all adds up if you do a lot of highway driving. I'm lucky with the trifecta tune for the V6, i can toggle it on or off with the mode button the car has. Not sure if such an option exists for the V8, but i would suggest you (the OP) retain the ability to leverage the afm for when you can cuz it isn't going to hurt to do so.