Golf R Observations and Questions

[brad]

AC on yes, traffic yes but I have tried driving very smoothly for a while and it never went below 14.6L/100km.

Its a massive difference to everyone on here. I think its a bit strange.

I'd be bringing it up with the dealer. Maybe you'll have to do a comparison consumption test with another vehicle. It would probably be a good thing if you had a record of actual consumption using mileage & fuel dockets.

[Glennb]

I have 19" rims, AC on all the time, foot down (just cause i can) and still don't get below the 500km a tank mark unless i leave it in sport mode the whole time.
Might be worth getting it checked out abufijli, assuming you are doing your own calcs and not just going from the MFD figures.

[abufijli]

I have 19" rims, AC on all the time, foot down (just cause i can) and still don't get below the 500km a tank mark unless i leave it in sport mode the whole time.
Might be worth getting it checked out abufijli, assuming you are doing your own calcs and not just going from the MFD figures.

The figures Im using are straight off the MFD. Are they not accurate and how do I do my own calc? What is an accurate way?

[Candyman]

Fill the tank

Record start km's

Drive until next fillup and record km's driven and liters used

You can then calculate L/100 km

Do this 3-4 times

Average results

The MFD usage should be reset often, especially on a new vehicle - it is often inaccurate early on

Are you seeing instant fuel use or average fuel use in the MFD ?

They are different

There is also daily and overall fuel use on MFD. Which are you looking at ?

[abufijli]

Fill the tank

Record start km's

Drive until next fillup and record km's driven and liters used

You can then calculate L/100 km

Do this 3-4 times

Average results

The MFD usage should be reset often, especially on a new vehicle - it is often inaccurate early on

Are you seeing instant fuel use or average fuel use in the MFD ?

They are different

There is also daily and overall fuel use on MFD. Which are you looking at ?

Im looking at the overall fuel usage. My car has only done 3500km so far. Could it be still settling down?

Do you guys think having a Bluefin installed will increase fuel consumption?

[Candyman]

More power output requires more input so yes, using what bluefin offers will clearly increase fuel consumption

[Ryan_R]

If you have more torque you won't need to rev the car as much so you won't increase your fuel bills (unless you floor it a lot)

I drove sedately to Melb Airport this morning then went back home the (very very) long way in sport mode, through twisties, mountains, etc and the Avg Fuel Consumption (1) reading was 6.9l per 100kms (the official average for the stock car is 6.5l).

[brad]

Im looking at the overall fuel usage. My car has only done 3500km so far. Could it be still settling down?

Do you guys think having a Bluefin installed will increase fuel consumption?

Your engine isn't anywhere near run in yet - keep hammering it. As i wrote earlier, mine continued to improve right through to 15,000km. I would recomend you reset "avg consumption 2" and see how it goes & also start recording fuel usage (there are some phone apps that you can use if you don't like setting up spreadsheets).

I've got Bluefin & my economy is better than stock because I can ride the torque curve rather than revving the engine a couple of thousand rpm higher. Depends on the car/driver/conditions, etc though.

[Corey_R]

More power output requires more input so yes, using what bluefin offers will clearly increase fuel consumption

What the others have said... overall you will probably see a decrease in fuel consumption, simply cause you don't need to press the pedal as far, or rev it as high, to move the same speed, due to the better torque etc. If you are on the limit on a race track, you'd probably use more though.

[Candyman]

Not as simple as that at all

The AFRs are considerably different and I can think of no circumstance where anyone that modifies with a flash of the ECU map would not be using more power. Torque in itself requires rpm, or the power formula has suddenly been changed by someone

Physics, dammit

[Corey_R]

Well, in all 3 of my VW's which have been flashed, fuel consumption has dropped slightly... I know that there are dozens of other members who also have experienced this after flashing their VWs too... but you're entitled to your opinion

[brad]

Not as simple as that at all

The AFRs are considerably different and I can think of no circumstance where anyone that modifies with a flash of the ECU map would not be using more power. Torque in itself requires rpm, or the power formula has suddenly been changed by someone

Physics, dammit

i fully understand what you are saying.
For like-for-like throttle inputs I'm sure I'd be using more fuel but I can put my hand on my heart & say that fuel consumption improved when i added bluefin. Keep in mind that the torque is artificially limited (250Nm on my car) with the stock tune.

Back in the day when I had my 3.6L XT Falcon economy improved heaps (like 38mpg on country trips) when I fitted extractors, dual system & a 350 Holley (going into the standard cast-in manifold FFS), water injection, msd6 & re-curved the advance. OTOH, I can think of half a dozen other cars i had that drank like fish before & after mods.

[Candyman]

Agree brad.

[Big_Dave]

Hi Guys,
Had a fun day at Qld Raceway Wednesday.
Time attack sprints day.
This is a local group who has about 14 meets a year.
Great concept.
Staggered starts, not allowed to overtake except on the straight. No Hooligans tolerated, and Very well run event with medical support on the track should it be required.
Enjoy the Video.
Golf R Stage 2+, I had street boots on and no suspension mods.
Couldn't overtake the stock xr5 on the straight but easily caught him on the rest of the track as he was braking way too early for corners.
this was my first run, so please excuse the driving lines.LOL.

Golf R QLD Raceway 7th September 2011 - YouTube

TimeAttack - Home

[Candyman]

Commentary at the end is classic

Nice work mate