Active Fuel Management, does it actually make better mileage??
01-30-2010, 10:52 AM
#11
Well, I'll have to disagree with you with some data but this is a car, my wife's G8 GT. The sticker says 16 city and 24 hwy. After her driving it stock for about 6 weeks and getting some data (stock), it was more about 18.2 city and 23.4 highway. Only mods were tuning with AFM disabled and Homemade CAI and the car has repeatedly returned 18.5 to the most recent 19.7 city mpg while the DIC showed 18.7 and we have seen on average 26 mpg with a max of 28 mpg on the hwy. These are not DIC numbers, these are calculated numbers and the gas was about as even as I could get it, filling the gas to the neck everytime.
But again...this is a car to so....
GM has used this for CA/FED because the gov't wants all vehicles in the fleet to have a certain mpg rating by 2012 or something like that. I believe the mpg reading was 21?
But again...this is a car to so....
GM has used this for CA/FED because the gov't wants all vehicles in the fleet to have a certain mpg rating by 2012 or something like that. I believe the mpg reading was 21?
My wife's 2006 5.3 DOD Trailblazer is all stock and I have played with turning on/off the DOD. While we don't care for the feeling of it going on and off it does appear to be good for ~1-2 mpg highway with cruise control on trips.
01-31-2010, 01:20 PM
#12
My 2010 AV has the active fuel management and it is imperceptible when it kicks in/out. I don't see how it is going to help fuel economy too much as it seems to rarely be in V4 mode. I have only done 1 highway trip with it so far, but I did not see V4 mode at all at highway speeds on roads that are pretty well as flat as it gets.
That said, this thing just sips fuel compared to my 04 AV(see sig).
That said, this thing just sips fuel compared to my 04 AV(see sig).
02-01-2010, 06:41 AM
#13
My 2010 AV has the active fuel management and it is imperceptible when it kicks in/out. I don't see how it is going to help fuel economy too much as it seems to rarely be in V4 mode. I have only done 1 highway trip with it so far, but I did not see V4 mode at all at highway speeds on roads that are pretty well as flat as it gets.
That said, this thing just sips fuel compared to my 04 AV(see sig).
That said, this thing just sips fuel compared to my 04 AV(see sig).
On the logs it is very evident when it kicks in and out.
04-15-2017, 05:49 AM
#15
TECH Fanatic
First post is in a 7 year old thread?
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