Battery Disconnect

[NeilSmith]

i dont use the odometer neither, i use gps.

[Sal-XK]

i dont use the odometer neither, i use gps.

I used the GPS to get my spedo error so I can responsibly get some what of an accurate MPG. I'm running about 14.2 right now country hilly driving.

[NeilSmith]

it just sounds funny to me that if the computer knew what it was doing then it would automatically detect that you changed the plugs and you wouldnt have to unhook the battery to reset the system. im old fashioned , i guess.

[Matt]

i dont use the odometer neither, i use gps.

GPS doesn't account for altitude changes. If you live in a flat area it's not bad.

it just sounds funny to me that if the computer knew what it was doing then it would automatically detect that you changed the plugs and you wouldnt have to unhook the battery to reset the system. im old fashioned , i guess.

The computer doesn't detect spark plug changes at all, not even unhooked. That just puts the computer back in to "learn" mode all over again and resets all of the sensors. If there are any changes that computer should make due to the plug change then it would eventually optimize itself, but it will take some time... you just force it to do it sooner by disconnecting the battery.

[Sal-XK]

GPS doesn't account for altitude changes. If you live in a flat area it's not bad.

Depends on what brand and model you're using. I use a hand held for land navigation that does take hills and stuff into consideration as it tracks you mileage. I don't know to much about the ones mounted in cars though. I have to wedge it in the window sometimes I have to hold it in the window I hardly if ever use the nav unit installed in my jeep.

[Matt]

lol yeah i was just talking about the general automotive garmins and tom toms. I guess the higher end ones would help. He's still stuck with the inconsistency at the pump though.

I usually use my GPS to dial in my tire size so my computer is accurate. If i'm within 1mph of what my GPS says on a flat highway at 70 mph, i know i'm good to go. Then it doesn't get much more accurate than that.

[Sal-XK]

If you get it at 1mph at 70 MPH thats pretty darn good. I don't think they come from the factory that accurate

[jay in nb]

GPS doesn't account for altitude changes. If you live in a flat area it's not bad.



The computer doesn't detect spark plug changes at all, not even unhooked. That just puts the computer back in to "learn" mode all over again and resets all of the sensors. If there are any changes that computer should make due to the plug change then it would eventually optimize itself, but it will take some time... you just force it to do it sooner by disconnecting the battery.

Thats is the reason I disconnected the bty, after 4 days of driving and filling up twice due to the amount of driving I did, I saw no change at all ( Computer or how many K's I was getting per tank) I don't completely trust the computer with how much MPG i'm getting but when the number didn't change I though I'd try it and it seems to work, same drive after disconnecting I got almost 100K's more. Now that fishing is open I will be going to the cabin every weekend and I'll see how much k's I am still getting to a full tank.
While looking at the MPG is not a modivational poster it doesn't matter when I pass 3 stuck Toyotas stuck, yes 3 and just drive around them to get to my fishing holes, it worth every $/gallon

[jay in nb]

Just some info from my experience, after a few weeks of driving, I am getting the same mileage and even a little less then before I disconnected the Bty, so this urban myth of getting better mileage by disconnecting the bty was false. Maybe Mythbusters would have better luck then me.