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-   -   OBDLink MX+ helped improve MPG (https://www.irv2.com/forums/f107/obdlink-mx-helped-improve-mpg-454438.html)

SavnTheWales 07-27-2019 02:44 AM

OBDLink MX+ helped improve MPG
 
I bought a ScanTool OBDLink MX+ to try in the Bounder. I used my iPad for the display. I am really pleased with the results. It helped me find the best speed to run at for the best MPG. It also allowed me to monitor transmission temp as I was in hot climate and mountain terrain.

I know the theory that 60 should be the best speed for mpg, but I found 65 put me in a better rpm range and gave a little more mpg. Obviously it depends on wind, climbing, etc.

The iPad gave me a large screen to glance at versus a small phone screen. I ran all day and it worked great. It logs a lot of data you can look at later.

So if you are wanting to know more about your rig I would recommend trying this unit. Itís about $80 and well worth it. Comes with free software for PC and mobile device.

SLOweather 07-27-2019 07:58 AM

We have one in our Sunstar. I set up a tablet as a glass dash display and we run OBDlink when we drive, too. I prefer its speed gauge to the analog speedometer on the dash. It's amazing how many parameters are available for it to show, plus it has other features too.https://www.sloweather.com/blog/2019/190520obdlink.jpg

SavnTheWales 07-28-2019 01:25 AM

Quote:

Originally Posted by SLOweather (Post 4883574)
We have one in our Sunstar. I set up a tablet as a glass dash display and we run OBDlink when we drive, too. I prefer its speed gauge to the analog speedometer on the dash. It's amazing how many parameters are available for it to show, plus it has other features too.https://www.sloweather.com/blog/2019/190520obdlink.jpg

Yep, I am using the same display (digital). I also noticed that cruise does help with mpg. On a flat road holding steady speed the cruise seems to back off a little more than my foot. Weird but it does it.

BigEvi 07-29-2019 07:45 AM

Kinda hard to believe that higher speed, more drag, more rolling resistance, etc resulted in less fuel usage. Generally higher speed means higher HP output which means more fuel. Must be a transmission gearing thing...maybe overdrive is too over...and engine is lugging in an inefficient RPM range.

-E

SavnTheWales 07-30-2019 01:29 AM

Quote:

Originally Posted by BigEvi (Post 4886344)
Kinda hard to believe that higher speed, more drag, more rolling resistance, etc resulted in less fuel usage. Generally higher speed means higher HP output which means more fuel. Must be a transmission gearing thing...maybe overdrive is too over...and engine is lugging in an inefficient RPM range.

-E

Yes that is what I found. At 65 you get a better rpm to roll over more hills without having to put your foot in it or down shifting. Without the display I would have not figured this out. I had 5000 miles to test a lot of situations. Learned a lot about tow haul mode and how to control the 2 downshift scenario.


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