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TDI Fuel Economy Discussions about increasing the fuel economy of your TDI engine. Non TDI related postings will be moved or removed.

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Old July 21st, 2017, 04:59   #91
IndigoBlueWagon
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dubStrom, a DSG tune might address your driveability complaints. I know Jeff at Rocketchip makes a number of changes to improve responsiveness and shift patterns in the DSG. He says the changes make the car smoother to drive, and improves in-town fuel economy. Highway economy doesn't change. And an engine tune might help, too. Folks I know who've tuned their '15s are seeing better power and responsiveness but no loss of FE.
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Old July 21st, 2017, 06:58   #92
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2015 on board calculator for mileage is pretty horrible. My car thinks it's getting a 48 mpg average on its tank, but pen and paper typically tells me it's only getting 41.

Been hovering around 40-43 so far, but I drive like ****.
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Old July 21st, 2017, 13:40   #93
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Originally Posted by Blue_Hen_TDI View Post
Airbus, what's the drive from Montreal to Toronto like? I'm doing that in two weeks. Looks really boring on a map.
It's pretty boring.

For a nice diversion take the 1000 Island Parkway. It'll cost you about 10 minutes but the views of the river are beautiful.
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Old July 21st, 2017, 16:40   #94
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Better yet going west from the Quebec border and take exit 778 and go south for about 1 mile on Moulinette Rd to the OLD highway # 2 and follow it west.
This was many years ago the route to and from Montreal. It is a bit over 400km or 250 miles.

You'll go through many towns in rural Ontario. You can take it all the way to just before you get to the east side of Toronto in Pickering.

This would take you through, Morrisburg, Cardinal, Brockville, Gananoque, Kingston, Napanee, Bellevile, Cobourg, Port Hope, Oshawa, Whitby and Ajax.
At Gananoque keep a sharp lookout for the 1.000 Island Parkway and it will join Highway 2 again.
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Old July 21st, 2017, 17:03   #95
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Sorry for the slight hijack, but thanks for the great tips. We have planned one full travel day between our stops in Montreal and Toronto, so we have plenty of time to take it slow that day.
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Old July 21st, 2017, 18:36   #96
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My MFA has only been off 2-3 mpg,if that. The MFA was reading in the 49mpg range in the "since refuel" section,and my pen and paper was 47.3 mpg. This car is getting better mpg than my old B4 and A3 TDI,even though this is the DSG, not a 5spd.
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Old July 22nd, 2017, 06:10   #97
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36 mpg? Ouch! Obviously opposite driving conditions from mine.

I'd love to see what mine would do with tune and dpf delete, but I just can't get any reasonable assurance the tune would pass Delaware's obd2 readiness check when they plug in. They don't check the hardware here. Software is my only concern.
The only sensor that gets deleted is the LP EGR temp sensor, everything else is plugged in and functions. Warranty is a different story.

I'm amazed at the economy you're getting in stock form though! Check my fill ups to compare, it's been deleted for a year now plus it's 6MT and I drive for economy 95% of the time. Just added some lighter wheels/tires (6lbs less on each corner) and seeing a bump there as well, should be more as tread begins to wear. 63k miles on it.

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Old July 22nd, 2017, 06:57   #98
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The only sensor that gets deleted is the LP EGR temp sensor, everything else is plugged in and functions. Warranty is a different story.

I'm amazed at the economy you're getting in stock form though! Check my fill ups to compare, it's been deleted for a year now plus it's 6MT and I drive for economy 95% of the time. Just added some lighter wheels/tires (6lbs less on each corner) and seeing a bump there as well, should be more as tread begins to wear. 63k miles on it.

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I will get the Phase 2 fix done first probably, if only to get the sticker under the hood for whatever that may be worth, before any potential modding.

As far as my mileage goes, I am beyond impressed with this TDI. The EA288 is the most efficient and most powerful of the four TDI's I've owned. Just a sweet piece of engineering by VW, even post-fix. The fact it was also cheaper to buy new than my first TDI and has triple the warranty is icing on the cake.

Full disclosure on mileage: Keep in mind that I only drive this car for trips over 20 miles. Any errands or hooning are satisfied by my modded GTI. . The mileage on the GTI has dropped from low 30s to mid 20s since it lost its commuter/road tripper role.
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Old July 24th, 2017, 06:20   #99
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Originally Posted by Jetta_Pilot View Post
Better yet going west from the Quebec border and take exit 778 and go south for about 1 mile on Moulinette Rd to the OLD highway # 2 and follow it west.

This would take you through, Morrisburg, Cardinal, Brockville, Gananoque, Kingston, Napanee, Bellevile, Cobourg, Port Hope, Oshawa, Whitby and Ajax.
At Gananoque keep a sharp lookout for the 1.000 Island Parkway and it will join Highway 2 again.
I'm guessing this would add an hour to an hour and a half to the drive. It would be beautiful, but IMO not worth it.

The 1000 Parkway adds minimal time and is totally worth it.
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Old July 24th, 2017, 06:41   #100
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I'm guessing this would add an hour to an hour and a half to the drive. It would be beautiful, but IMO not worth it.
The 1000 Parkway adds minimal time and is totally worth it.
You shall henceforth be referred to as The Hare.
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Old July 24th, 2017, 06:45   #101
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you shall henceforth be referred to as the hare.


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Old July 24th, 2017, 19:43   #102
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Default FE is the issue

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Originally Posted by IndigoBlueWagon View Post
dubStrom, a DSG tune might address your driveability complaints. I know Jeff at Rocketchip makes a number of changes to improve responsiveness and shift patterns in the DSG. He says the changes make the car smoother to drive, and improves in-town fuel economy. Highway economy doesn't change. And an engine tune might help, too. Folks I know who've tuned their '15s are seeing better power and responsiveness but no loss of FE.
FE is bad enough to be the primary concern right now. I can get performance by pressing the accelerator down, at cost of even MORE FE loss! My 2014 held speed with higher FE. This 2015 can't maintain speed without oddly low FE... must press the accel peddle more than normal (seems). Instantaneous readouts are way lower and hand calculated FE bears it out.

I'd like to tune for FE. If DSG tune will also help, I will do it.
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