MDS Question
#1
12-19-2010, 07:59 AM
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MDS Question
Hey guys,
I am just wondering how I can tell if my MDS is working on my truck. I have a flowmaster exhaust with tips out the back but I can't hear or tell if my MDS is kicking in or not. My last truck (2006 Ram) had a magnaflow exhaust and it was VERY noticeable when MDS would kick in but for this new one it's incredibly hard to tell. I doublechecked on my DSP to make sure it was set to on. Anybody have any input on this?
I am running 5w-30 oil down here in South Florida. Could that be it?
I am just wondering how I can tell if my MDS is working on my truck. I have a flowmaster exhaust with tips out the back but I can't hear or tell if my MDS is kicking in or not. My last truck (2006 Ram) had a magnaflow exhaust and it was VERY noticeable when MDS would kick in but for this new one it's incredibly hard to tell. I doublechecked on my DSP to make sure it was set to on. Anybody have any input on this?
I am running 5w-30 oil down here in South Florida. Could that be it?
#2
12-19-2010, 08:44 AM
You should be able to feel the change. Even before I had an aftermarket exhaust I could feel the switch from 8 to 4 in the pedal, and especially when I was accelerating and it was switching back up to 8. Maybe I just have an incredibly sensitive foot! lol. Does your ram not have the "fuel saver" light? I find the light to be accurate most of the time when the MDS kicks in and out.
#3
12-19-2010, 09:58 AM
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#4
12-19-2010, 10:06 AM
You should be able to feel the change. Even before I had an aftermarket exhaust I could feel the switch from 8 to 4 in the pedal, and especially when I was accelerating and it was switching back up to 8. Maybe I just have an incredibly sensitive foot! lol. Does your ram not have the "fuel saver" light? I find the light to be accurate most of the time when the MDS kicks in and out.
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
#5
12-19-2010, 11:19 AM
I had MDS on my '07 and now on my '10, and in my opinion you can't feel a thing - and I'm pretty sure that's what Dodge engineers intended. I installed an Edge programmer in my '07 and set the display to show when MDS was active, and unless I had a tuning package installed that display was the only way to know. With the truck tuned you could feel a slight bump (like a shift point) when it kicked in, and it was annoying as hell... thank God you can't feel it or it would drive you crazy!
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
This is what i`ve been trying to get across to some people in here, about how the ECO light in the evic works. You are the only one to have described exactly how it works. You hit the nail right on the head bro...!!!!!!!! The MDS has NOTHING to do with the ECO light circut, they are NOT wired together within the circut. They BOTH live on the same street, but they live in seperate house`s so to speak. (housing & street is the only anology i could think of) The ECO light only comes on when you are driving in a "fuel saveing manor". When the truck is very close to going 4cyl, OR, very light gas pedal pressure, the ECO circut monitor`s and see`s this, and then activates the ECO light accordingly. When you decel, the fuel injectors are shut down also, and the ECO circut ALSO see`s this, and can also turn on the ECO light in the dash.
Last edited by HEMI5150; 12-19-2010 at 12:08 PM.
#6
12-19-2010, 11:30 AM
Admin formally known as 94rt10ohio
#7
12-19-2010, 11:53 AM
GARYC....!!!!!!!!!!!!!!!!! OMG,THANK YOUUUUUUUUUU...!!!!!!!!!!!!
This is what i`ve been trying to get across to some people in here, about how the ECO light in the evic works. You are the only one to have described exactly how it works. You hit the nail right on the head bro...!!!!!!!!
This is what i`ve been trying to get across to some people in here, about how the ECO light in the evic works. You are the only one to have described exactly how it works. You hit the nail right on the head bro...!!!!!!!!
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#8
12-19-2010, 12:13 PM
Upstate NY...???
I had MDS on my '07 and now on my '10, and in my opinion you can't feel a thing - and I'm pretty sure that's what Dodge engineers intended. I installed an Edge programmer in my '07 and set the display to show when MDS was active, and unless I had a tuning package installed that display was the only way to know. With the truck tuned you could feel a slight bump (like a shift point) when it kicked in, and it was annoying as hell... thank God you can't feel it or it would drive you crazy!
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
what part of "Upstate NY" do you live...???
I`m in the WatkinsGlen - Fingerlakes area
#9
12-19-2010, 05:01 PM
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Will do... 5W-20 it is.
And as far as the ECO light goes, my truck doesn't have it because I haven't brought it by a Dodge Dealer yet to have them flash it, and quite frankly I could care less about a little light on the EVIC saying I'm "saving fuel."
And as far as the ECO light goes, my truck doesn't have it because I haven't brought it by a Dodge Dealer yet to have them flash it, and quite frankly I could care less about a little light on the EVIC saying I'm "saving fuel."
#10
12-19-2010, 05:10 PM
I had MDS on my '07 and now on my '10, and in my opinion you can't feel a thing - and I'm pretty sure that's what Dodge engineers intended. I installed an Edge programmer in my '07 and set the display to show when MDS was active, and unless I had a tuning package installed that display was the only way to know. With the truck tuned you could feel a slight bump (like a shift point) when it kicked in, and it was annoying as hell... thank God you can't feel it or it would drive you crazy!
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
As far as the "ECO" light on the EVIC, I think a lot of people are mistaken if they believe this is in any way related to MDS operation. MDS doesn't kick in and out nearly so often as that light comes on and off (remember, I could watch the MDS on my '07). MDS will occasionally kick in at lower speeds like 35-40 MPH, but only after a brief period of steady driving... MDS won't kick in during stop-and-go city driving.
I suspect the "ECO" sensor is tied in with the vacuum system somehow (remember the old fuel economy gauges you could buy back in the '70's that tied into a vacuum line?) The "ECO" light tells you one pretty basic thing - with your foot in the pedal you're not getting as good a MPG rate as you would when you back off.
Last edited by Medic1; 12-19-2010 at 05:15 PM.