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Discussion Starter #1
Yesterday, I took a trip to a friends farm where I hunt and ride horses. It's 150 miles round trip over rolling hills, thru a couple of smaller towns, a small city and only 40 miles of interstate. I drove without cruise control and kept my speed between 5-10 miles over post speed limits. I averaged right at 29.9 when I finally made it home. Many times the average would be in the 31.5 range. In fact until I climbed the long, steep, winding hill to get to my house it was averaging 30.5 MPG.
 

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Is that hand calc'd or going by the readout? Often times they are different.
 
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What was the average speed limit? I drive a diesel car and get very good gas mileage with speed limit under 60 and hills do not affect the mileage. My speed limit drops noticeably when I reach 65 and above. Regardless, that's a lot better report than we see on Fuelly. Thanks.
 

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Discussion Starter #5
It's just the EVIC readings. Even if the EVIC is .5-1 MPG over hand calc, which seems to be the average difference with most that have done the hand calc, that is still pretty good.
 

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It's just the EVIC readings. Even if the EVIC is .5-1 MPG over hand calc, which seems to be the average difference with most that have done the hand calc, that is still pretty good.
fyi...ours is within .5 of the evic as compared to hand calcs.
 

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FYI. When I don't tow the EVIC is darn close to right on. Towing is where I see a difference and it's sometimes above or below the hand-calculated figure Just not right on.

Indiana is mostly flat land. I bet you can do real well on secondary roads under reasonable weather conditions. 30mpg would not surprise me. I have seen it here in Florida and done 28mpg on a 300 mile interstate run one day. That was at speeds to 85 mph but mostly 75 - 80 mph.
 

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We have had six fill ups on our Ram Eco Diesel thus far with the following results:

Actual FE Display
19.87 19.1
20.34 21
20.75 21.7
16.76 16.5
18.84 19.1
18.68 19.2

Generally speaking the actual and indicated is within 0.5 mpg. Our low number was trailer towing 4000 lb. Most of the driving is 70% city and 30% highway.

A good tune should be able to up these numbers a solid 15% and maybe up to 20% in pure highway driving. We are currently developing a tune for the Ram and should have data withing 3-4 months on that.

For this product tuning will have to be completed on a bench as the is no OBD tool on the market that will tune an EDC17 ecm. Maybe this will change in the future. GDE
 

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looking forward to seeing how these numbers change with a tune with a number of different driving styles.

how much could the tune cost?
 

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Ours has a 3.92 axle ratio.

Green Diesel Engineering

You can visit our website to see the tuning we currently offer, it includes the WK sold in 2007-2008. So the new vehicles Ram and GC will be a progression of our current product offerings.

We take our time developing tunes and use the same engineering methodology as the OEMS, i.e. cold testing, hot testing, trailer tow, etc. to make sure the tunes will function well in any driving situation. Prime focus is always fuel economy as we like our tunes to pay for themselves in fuel savings in under 30,000 miles.

Thanks GDE
 

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Mpg

I have new Crew Cab, 4x4, 6'4" Ram box ED. Through 5 fill ups I am getting 22-24 mpg. 50% city-50% Hwy. I drive easy to maximize efficiency but I also haul tools and HVAC equipment. I am hoping truck will loosen up somewhat over the first few thousand miles and get even better mpg. I look forward to a road trip to Santa Fe in a month to see how well it does on 100% highway.
 

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My Evic showed 24.9 and hand calc gave me 24.7MPG, highway 95% highway commute to work and back home. NB CA. Rte 2 is rolling hills, so milage suffers. Truck was completly empty of gear except for me and my coffee.
 

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Well I put my first fillup in my truck. Crew, 4x4, 3.55 gears. Now since the dealership filled it up before I left, figure they barely made it to say full. Area I drive is pretty much as flat as it gets. 50% city, 25%hwy, 25% pulling boat or utility trailer on same hwy. So in US speak I got 17.5mpgUS calculated. Not overly impressed, but will see how it goes.
 

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My first long test drive

I bought my eco diesel in Tifton ga last Wednesday. On Friday I took a trip to Clarksville Tennessee. I reset the fuel economy thingy on the dash, cruse was set around 74 almost the whole way. Hit a little traffic in Atlanta and then over the mountain in Chattanooga, was about 500 miles and when I parked the mpg read 30.2. It was as high as 32.9. And only use 3/4 tank fuel. Awesome. On the way home got 27.8. I was carrying stuff that was above the cab, so had some wind drag. Has now been 8 days and still around 26.7. And that's city and highway. Sure beats my 2012 ram 1500. Never got better than 17.5.
 
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