Realtime MPG Readout?
- Thread starter Jacalore
- Start date
Strodinator
Caught the Bug
Your diagnostic port is pretty much it besides major upgrades to bypass it.
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WW_Svi
New member
If you absolutely want it the obd2 port is the easiest. Figure out which wires are needed (power, ground, 2 CAN wires) and you could splice into it to run a separate device. There are apps for your phone like Torque and others. There are also other systems that are hardwired to a little lcd display. Google is your friend here.
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WW_Svi
New member
I haven’t looked into stuff for the obd port for a while now but it looks like it would work. That will make things nice and simple. The apps on the phone are pretty convenient and usually have good info on them. It’s a nice feature to get check engine data as well.
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duktrx
Active Member
OverlanderJK
Resident Smartass
You need to calibrate your speedo for tire size before you’ll get accurate readings. I doubt the weight of the tire made you take as big of a hit as you think.
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zimm
Caught the Bug
But the diameter not matching the factory calibration means the jeep is actually rolling further than the computer thinks. Therefore your mpg will read lower than actual.
Why worry about real time mpg? You have the wrong vehicle for saving fuel.
I get 11mpg if that makes you feel better.
Why worry about real time mpg? You have the wrong vehicle for saving fuel.
I get 11mpg if that makes you feel better.
Jacalore
New member
Haha! I want to know everything!
Correct on the tire change/mph error.
Mpg is a handy stat to monitor changes. Knowledge is power!
Gonna go with port splitter, and hope the 2 dongles don't interfere with each other.
Jacalore
New member
So, the data available depends on Jeep's monitor/computer setup.
Any way to know that in advance? What data I'll be able to view?
RioGrandeJK
New member
I picked up an Ultra Gauge Blue ($80 or so) seems to work decent. Plugs into OBDII and you download an app for your phone (works with android and IOS... not sure on windows) The info it will provide is determined by what sensors the vehicle has which isn't always clear, you really need to play with the different gauges and see what works for you. If it doesn't work chances are you don't have that sensor. I got it to monitor engine temp (really wanted oil temp/pressure but I guess I don't have those sensors) while towing as well as the ability to read and clear trouble codes. It was highly recommended by a friend who uses one on his Taco.
Here' s the link:
http://ultra-gauge.com/ultragauge-blue.htm
Get a ProCal as well and get your tire size calibrated, it also works great to level that uneven kitchen table after you get your vehicle dialed in.
Here' s the link:
http://ultra-gauge.com/ultragauge-blue.htm
Get a ProCal as well and get your tire size calibrated, it also works great to level that uneven kitchen table after you get your vehicle dialed in.
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WW_Svi
New member
The obd2 readers should be able to read any information made available by the manufacturer. Now the big thing to this is that the company that made the app knows what channels to read and how to convert that data to something that makes sense to us.
Grand cherokees have oil temp readout but idk about wranglers. Never checked what they have. If the app doesn’t have a reading but you know the manufacturer has a channel for that data, you typically can make a custom sensor or data on the app along with the conversion units and then you can read it. But if you don’t know then it may be hard to find.
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Grand cherokees have oil temp readout but idk about wranglers. Never checked what they have. If the app doesn’t have a reading but you know the manufacturer has a channel for that data, you typically can make a custom sensor or data on the app along with the conversion units and then you can read it. But if you don’t know then it may be hard to find.
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Jacalore
New member
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WW_Svi
New member
Looks to have a good amount but that’s really up to you. If it’s got what you’re looking for, the price is right and reviews sound good then that sounds like a win.
Edit: I realize what you were asking. I have no idea on the wranglers. I’ve never plugged my scanner into mine. I only use mine on my summer car.
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Edit: I realize what you were asking. I have no idea on the wranglers. I’ve never plugged my scanner into mine. I only use mine on my summer car.
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Jacalore
New member
Your Wrangler is your winter car?
RioGrandeJK
New member
That list seems about right, but I have tried some of these gauges and they don't display anything. Such as oil temp, last time I tried it it just said "-40*F". I'll try it again on the way home today.