Jump to content
SAU Community

Fuel Economy For 250Rwkw+

V28VX37

By V28VX37,
in General Automotive Discussion

 Share

Recommended Posts

V28VX37 Veteran

V28VX37

Posted
Posted

Hi all, I did a quick search but couldn't find much on fuel economy so I thought I'd post this up.

I've got an R34 GTT auto with a recently installed Hypergear ATR43SS2 and supporting mods (full list here), currently running 257rwkw.

I always keep track of my fuel expenses and I measure consumpsion by filling up fully every time and noting down the odo reading. Here's an overview:

  • Completely stock 150rwkw, overall average of 12.2 litres/100km over 8,000 kms
  • Stock turbo with upped boost and Nistune with supporting mods 199rwkw, overall average of 11.9 litres/100km over 18,000kms

I've only filled up the car the three times since having the Hypergear installed, however the average consumption is currently sitting at 16.4 litres/100km. Granted it's been a lot of city driving but it's still a pretty silly figure.

What kind of economy (litres/100km) are you guys getting out of your 250rwkw+ setups?

Link to comment
https://www.sau.com.au/forums/topic/436056-fuel-economy-for-250rwkw/
Share on other sites
V28VX37 Veteran

V28VX37

Posted
  • Author
Posted

not really that silly. what did you think was going to happen?

Umm, I expected maybe a 20% increase in fuel consumption? My previous car with a 5.7 litre LS1 and 293rwkw drank an average of 16.9 l/100km, just as another reference point.

But yeah keen to hear what others are getting.

GTR-N1 Grand Master

GTR-N1

Posted
Posted

Time to hybridise? - jk

Tuner says? - srsly

Right foot in stop/start traffic? - srsly

Me with 320wKw? In my country town and driving gently, I use 12.8 l/100Km. In nearby hairpins, it goes up to 20...

OVA 300 Collaborator

OVA 300

Posted
Posted

Modified cars and GTR ownership isn't measured in miles per gallon but smiles per gallon. The more you use the more you get. ( legally of course ). Cough.

If you can't afford the petrol you can't afford the car.

V28VX37 Veteran

V28VX37

Posted
  • Author
Posted

Thanks guys. I'm not complaining, just trying to work out what I should expect in terms of fuel consumption and if there's something I could improve in my setup, tune or driving style.

Coincidentally, there is a recent thread on the LS1 forums with people reporting their gas mileage, which I found quite useful. It confirms that city driving/low speeds really kill the economy with high powered cars.

Guest
This topic is now closed to further replies.
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      R33 gtst gearbox top barb

      By joshuaho96 · Posted

      Breather for it. If it's anything like the GTRs it should run up to the top of a bellhousing bolt.
    • joshuaho96
      R32gtr sputtering and stalling

      By joshuaho96 · Posted

      What basics? With these OBD1 ECUs it's not like the ECU will give you any real clues, it's not really doing any sanity checking of sensors/sensor data. My experience is actually a lot of sensors tend to be the source of the issue first and foremost, and checking everything gives you a direction to investigate. MAF/O2/STFT/LTFT should all kind of make sense. You can try little tricks of the trade like tapping the MAFs to see if it triggers a stumble, things like that. But once you've done a compression test knowing whether you have an air leak or fuel delivery problem is kind of hard to narrow down without sensor data. And you don't really know if all your sensors are making sense unless you can interrogate the ECU directly about what it's seeing for sensor data.
    • GTSBoy
      R33 gtst gearbox top barb

      By GTSBoy · Posted

      Absolutely this. Yes, except not vacuum hose. Something oil/fuel safe is a better idea.
    • Duncan
      My BMW E39 528i touring

      By Duncan · Posted

      Like a Stagea, but not as cool! Hope you have enough garage space for this, or is something going to leave to make way for it?
    • PranK
      My BMW E39 528i touring

      By PranK · Posted

      The new project has arrived. I have wanted one of these for such a long time, well before that meathead Clarkson drove one in Africa. I really wanted an E34 but I have some medical issues that mean I *really* can't bump my head and the lack of airbags in the E34 made it just too big of a risk.  I don't know why I've always liked these older touring BMW's to be honest, but man I love this car. She's been pretty well maintained for her 243k's with what appears to be only a single oil leak at the oil filter housing gasket. It has a bunch of updates including later model bumper and headlights, 7 series billion-way adjustable seats and it came with a few spares and another set of wheels with legal tyres. I got a unregistered car permit from the RTA and drove it back from Canberra on Saturday.                   First cab off the rank is cleaning it up for blue slip. I dont know how picky they'll be but I figured I'd clean the headlights, fix the oil filter housing gasket, replace the speed sensors (throwing errors) and swap the OE wheels (the M Sport wheels have a big chunk out of one of the tyres.) I also need to replace all 6 gas struts - 2 for bonnet, 2 for hatch and 2 for hatch glass. The car tries to eat me whenever i open any of these. My plan for this car; Ultimately, this is a budget car. I can't afford to throw lots at it and its because I have another car that I got this, if something breaks its no big deal. I will just maintain and repair it really. But eventually I want to do a manual conversion. It actually looks pretty straight forward for E39's and the trickiest part will be sourcing the parts.  I do need to replace some suspension arms or bushes because wow, she's a floaty old girl. She's also fantastically slow. Like really, really slow. When pulling back out on to the freeway on Sat after a quick pull over I needed to wait until no cars were visible before going.  Oh, and the guy I bought it from had a gorgeous R31 GTS-X in the garage. 
×
×
  • Create New...