VW MkIV Aerodynamic Mods (Jetta, Golf)

[ausias]

Originally Posted by deejaaa

(1)never heard of that place. your local economy gurus?

1999 Skoda Octavia 1.9 TDI 110 cv Laurin & Klement Gas Mileage (EcoTxec) - EcoModder.com
You didn't understand what i meant because link to the fuel log posted broken

las 16000 kms fuel consumption was 4.28 L/100 kms based on full tanks.
1 mille = 1.609 km

Originally Posted by deejaaa

(2)what gear, L/kms don't mean anything to me. can kind of figure out km/h, but that's it.

USMPG = 235.2/(L/100kms)
that simple
L/100kms = 235.2/USMPG

so my car does 70 US MPG at 60 mph (56 to 62mph) in long travels with no air condiditoning on.

you'll find details in
Details: EcoTxec - 1999 Skoda Octavia 1.9 TDI 110 cv Laurin & Klement Fuel Economy - EcoModder.com

(3) don't know who Helga is either. car has an ALH.
it is the car from nachrider (other Ecomodder user). I realized now that you have another Jetta TDI.

I'm wondering why your mods give so close to my own experience. maybe you live in colder climate or maybe your gearing will accept more improvement.

ALH engine has the same VNT turbo than my AHF engine so it is almost the same engine. So i don't understant

[deejaaa]

according to your figures:

51 and 52 mpg is WORSE than mine.
your lifitime is 52:

where are are you getting your info?

[ausias]

I'ts really boring to drive 52 mph with 18 wheelers overtaking you while shouting unpleaseant words. so I decided time to time drive using the speed limits, 75 mph, here.

Since I did the full tank experience in the Spring and Summer i realized that with lmiting top speed between 52 to 65 mph, fuel consumption goes 62 to 56 mpg with no problem at all.

But one of the main fuel wasting I found is overcooling and warmup. Car needs aprox half a liter of diesel to reach the working temp, so it is not so moded like yours, but i Did more than 200 Vag com VCDS data logging travels, so I know data that it is not reflected in the fuel log because I can't compare 2 full tanks because there are lots of variables out of control.

if you skip my first 3 tanks with stock car you will notice that in 10.000 milles fuel average is 4.28 L/100km or 55 US mpg,

But according to my data:
From 2013-10-31 to 2014-05-20 I did the full tank experience with several different conditions.
Car burned 370.39 liters of diesel, in 8985.8 kms that means 4.12 l/100km or 57 mpg (US).
No overinflated tires, no smoth hubcaps, some aire conditiong above 32ºC (89ºF), a top speeds between 50 to 65 mph, no belly pan, no lower grill block in summer, climate here is like California and I'm at 20m above sea level, so I'll be a bit dissapointed with you results. but i'm not dissapointed, because i know that they are good but I try to understand why they are not even better as they should.

But I'm guessing that you also have a bit of a problem with overcooling, no taller gear enough so big aerodynamic improvement but you don't get a linear improvment because of BSFC being not linear and you are lowering load in the engine...

but your results are impressive and consistent, and your mods are very well executed.

But I'm sure that an euro 5th gear of 0.625 or even an UK 0.592 will raise your mpg to 65 or 69.
I did not the test because I don't have enough torque yet at low rpm, 235 Nm (173ft.lb) at 1900 rpm stock, but I need them or a bit more at lower rpms.
Did you have a power torque curve of your Malone Tuning ECU flash?

[deejaaa]

Originally Posted by ausias

I'ts really boring to drive 52 mph ... so I decided time to time drive using the speed limits, 75 mph, here.

..... limiting top speed between 52 to 65 mph, fuel consumption goes 62 to 56 mpg with no problem at all.
..... it is not so moded like yours, ..... Did more than 200 Vag com VCDS data logging travels, .....if you skip my first 3 tanks with stock car you will notice that in 10.000 milles fuel average is 4.28 L/100km or 55 US mpg,

But according to my data:
From 2013-10-31 to 2014-05-20 I did the full tank experience with several different conditions.
Car burned 370.39 liters of diesel, in 8985.8 kms that means 4.12 l/100km or 57 mpg (US).
No overinflated tires, no smoth hubcaps, some aire conditiong above 32ºC (89ºF), a top speeds between 50 to 65 mph, no belly pan, no lower grill block in summer, climate here is like California and I'm at 20m above sea level, so I'll be a bit dissapointed with you results. but i'm not dissapointed, because i know that they are good but I try to understand why they are not even better as they should.

But I'm guessing that you also have a bit of a problem with overcooling, no taller gear enough so big aerodynamic improvement but you don't get a linear improvment because of BSFC being not linear and you are lowering load in the engine...

but your results are impressive and consistent, and your mods are very well executed.
But I'm sure that an euro 5th gear of 0.625 or even an UK 0.592 will raise your mpg to 65 or 69.
I did not the test because I don't have enough torque yet at low rpm, 235 Nm (173ft.lb) at 1900 rpm stock, but I need them or a bit more at lower rpms.
Did you have a power torque curve of your Malone Tuning ECU flash?

not really much of your sentences make much sense to me. first you say your car is not modded like mine, you drive a certain speed, and i have overcooling. but then you contradict by saying something else. i never said i had a malone tune either. i don't know what to think. confused.....HELP!

[ausias]

2014-04-13 944.8 mi
1520.51 km 15.332 gal (US)
12.77 gal (Imp)
58.04 L
516.69 kWh $3.629
($55.64 total for this fill) 61.62 mpg (US)
73.99 mpg (Imp)
3.82 L/100 km
1.62 gal (US)/100 mi
546.88 Wh/mi had a malone eco tune for about 10 miles but had it removed because mileage was reading 38 mpg.

from 2002 Volkswagen Jetta GLS TDI Gas Mileage (getto) - EcoModder.com the car in your signature

I'm asking to nachrichter about Helga, but Deejaaa is kind of answering me about his Getto.
Why not put your replies in your own thread? http://ecomodder.com/forum/showthrea...tml#post449710

It seems easy to understand that last full tank fuel consumption is the result of driving at 75 mph on highway most of the times.

I wonder if you read the replies or the only thing you do is try to look for mistakes.

Did you understand that I drove 5500 milles with a 57 mpg average according to my data?
But I'm bored of being overtaked by big 40 Tm trucks, so I decided to raise the speeds. So the fuel consumption is not the same anymore.

change "I'll be" with "I'd be",

my best registered fuel filling is 3.70 L/100kms and yours is 3.67 L/100km that are some mpgs. But I did 2 long distance travel of more than 430 milles in loop with fuel consumption above 70 mpg with an average speed of 60 mph.

Do you think that small differences make sense?
Do you agree with me that maybe your good results should be better?

Maybe I'm not wrting in a good english enough for you and there is no way to communicate. I'm sorry because I'm not English teacher like Deejaaa.

in your fuel log you wrtie about speeds. does it mean that you always travel at those 52 mph to 65 mph depending on the tank. Do these speeds mean what are your own speed limits?

Do you think that 1200$ fix of 5th gear is not expensive? Here a brand new 0.658 fitted in a repair shop will cost 500$.

Do you find interesting that is it possible to find 0.625 and 0.592 here in Europe?

This is my last attempt, Deejaaa.

[Lavabo]

here are my front Grill delete, with Duct Tape and Vinyl Carbon look. Need to do the front upper grill now.. looking for a way to look clean.

Will save my IC from roads rocks damage at least And keep engine warmer in winter here with -20 C to -35 thos days

[Sjoegerd]

There is a guy in the Netherlands who managed 31.67 km/L (about 74 MPG US?) with a Golf IV TDi. He has a website but it is in Dutch but not updated since a few years.

Mijn Bluemotion: zuinig rijden met Volkswagen Golf IV TDI | Zuinigste Golf IV in aanbouw

[euromodder]

He's not even coasting ...

This is the ultimate ecomodder's Golf: the most efficient 1.9 TDi in a light body that's been further lightened by turning it into a 2 seater ...

Pics :
https://www.flickr.com/photos/mijnbl...7625026083328/

[COcyclist]

Anyone care to translate some of his posts into English and mpg? I would love to see how he has achieved these results and I don't speak Swedish. The car looks pretty stock from the outside and no major aero mods that I can see.

[seifrob]

Originally Posted by Lavabo

here are my front Grill delete, with Duct Tape and Vinyl Carbon look. Need to do the front upper grill now.. looking for a way to look clean.

Will save my IC from roads rocks damage at least And keep engine warmer in winter here with -20 C to -35 thos days

Nice job! Just out of curiosity: how did you manage to get THAT license plate on your car? Photoshop?