Quick DOD/AFM Question
Quick DOD/AFM Question Is there a way to tell if the DOD has already been turned off via a tuner? I was going to buy one, but the previous owner "seems to think" that it was already turned off. I have never driven one with or without it, so I don't know the difference.
Any kind of test I can run?
I have a 2008 Pontiac Grand Prix GXP.
Any kind of test I can run?
I have a 2008 Pontiac Grand Prix GXP.
You could listen for it I suppose. I can here mine when its activated around 50 mph. The GXP didnt get a dash light, something I have always wanted. wish someone could figure out how to add something in. On this forum any question on D.O.D will just end up with turn it off or keep it off answers anyway.
On The Tree
Joined: Mar 2012
Posts: 114
Likes: 7
From: Sarasota FL
IF its turned on, you'll be able to tell on the highway. Cruise along, give very light throttle, just enough so you accelerate without downshifting. Do you feel a hesitation, then a very small surge in power where it feels smoother? If you do, that's when the car is going from 4 to 8 cylinders. If not, its already turned off. That's the easiest way to tell.
Or, drive around with your eye on the rear view mirror all the time. When you're cruising along lightly, check it when you hit the gas. If it blows out a plume of blue smoke like my low mileage SS did, then its still working
I still don't understand why DoD causes oil consumption, but my car burned oil horribly. That's the only reason I turned mine off, because I lost over 2 MPG for a car already shitty on gas.
Or, drive around with your eye on the rear view mirror all the time. When you're cruising along lightly, check it when you hit the gas. If it blows out a plume of blue smoke like my low mileage SS did, then its still working
I still don't understand why DoD causes oil consumption, but my car burned oil horribly. That's the only reason I turned mine off, because I lost over 2 MPG for a car already shitty on gas. Ha, I did notice the "delay" like you mentioned. I also just bought the Diablo tuner and found out it was "On".
I have been running some MPG test for the last 2 weeks comparing DOD On vs. Off.
With DOD ON, I got 30.5-31.5 MPG (average) on a country road with cruise on 60 MPH. No stops and I had to come off cruise maybe once for a curve.
With DOD OFF (Diablo tuner), I got 25-26 MPG (average) on a country road with cruise on 60 MPH. No stops and I had to come off cruise maybe once for a curve.
Same warm up time, same time of the morning (temp around 77F).
I have not noticed blue smoke with DOD on or off, but I should check. I have about 104k on it.
I have been reading that turning DOD off actually gained others MPG, but that was definitely not the case for me.
I have been running some MPG test for the last 2 weeks comparing DOD On vs. Off.
With DOD ON, I got 30.5-31.5 MPG (average) on a country road with cruise on 60 MPH. No stops and I had to come off cruise maybe once for a curve.
With DOD OFF (Diablo tuner), I got 25-26 MPG (average) on a country road with cruise on 60 MPH. No stops and I had to come off cruise maybe once for a curve.
Same warm up time, same time of the morning (temp around 77F).
I have not noticed blue smoke with DOD on or off, but I should check. I have about 104k on it.
I have been reading that turning DOD off actually gained others MPG, but that was definitely not the case for me.
Last edited by 5.0stang; Aug 19, 2016 at 04:34 PM.
