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Fuel Economy For 250Rwkw+

V28VX37

By V28VX37,
in General Automotive Discussion

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V28VX37 Veteran

V28VX37

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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?

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V28VX37 Veteran

V28VX37

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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.

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GTR-N1 Grand Master

GTR-N1

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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...

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OVA 300 Collaborator

OVA 300

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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.

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V28VX37 Veteran

V28VX37

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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.

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