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fuel economy or lack of it

Guest rcd

By Guest rcd,
in Engines & Forced Induction

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Guest rcd

Guest rcd

Posted
Posted

Have been getting only 20 miles / gallon from my 93 r33 gts-t 4door auto. Has new NGK Iridium plugs and I use BP Ultra and 10 pounds boost.

Bought the car and had them up the boost to 10lb b/4 I took possession of it, so I don't know what the fuel economy was b/4.

Many people on the net say they get between 26-30 mpg so I was a little concerned. Had a mate of mine who works for one of the Nissan dealers check it out and all the data came up ok.

He said that it must be a combination of being an auto, the upped boost and a bit of a lead foot that is contributing to the low fuel economy.

Just interested to know what some of you guys are getting economy wise.

Thanx

Ric

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JimX Grand Master

JimX

Posted
Posted

I have no concept of how good or bad 20mpg is. I don't even know how to do the conversion.

My car gets 14-16L/100km around town (usually just under 15) when running at 0.8 bar boost. At 1 bar it is usually just over 15. I am experimenting with a tankful on 0.6 bar to see how much fuel I'll save, if I gain another litre/100km I will set it to 0.6 when I'm low on cash and need to save money on fuel :D (I love EBC's!)

On the highway I get 9.5L/100km on .8 bar and 10.5L/100km on 1 bar. Keep in mind that this is with a lot of spirited overtaking. It's the main thing that keeps me awake!

Man I hate this L/100km crap, makes it really hard to work out how far you can go on one tank on fuel. Sod it, I'm going to start doing kilometres per litre too, starting right now.

14L/100km = 7.14km/L = 428km per tank (fill up around or before 400km)

15L/100km = 6.67km/L = 400km (fill up ~370)

16L/100km = 6.25km/L = 375km (fill up ~345)

9.5L/100km = 10.53km/L = 631km (fill up ~600)

10.5L/100km = 9.52km/L = 571km (fill up ~540)

If I had been working off kilometres per litre instead of this stupid L/100km crap I could have saved myself from a huge stuff-up in refill planning on a recent holiday trip up north. I wasn't sure if I had enough fuel to make it to the next available servo on a round trip while in the area and ended up running around for an extra 60km that I later discovered I didn't have to (long story).

Guest rcd

Guest rcd

Posted
Posted

Thanx guys, I guess it must be my fault that this cars is an gas-a-holic.

I deal with metric measurement all day in my work and also relate things back to imperial often, but this litres/100 km has always pissed me off.

My daughters boyfriend is only 21 years old and knows perfectly well what miles/ gallon is.

Thanx again

ric

JimX Grand Master

JimX

Posted
Posted
Originally posted by hippy

how did u get 9.5/100km??  long highway drivin??

Actually, it was my gf taking the car up north from Sydney to Taree (about 300km) to visit relatives, then back again. Worked out to be 9.5L/100km when I did the mileage when she got back. We both then travelled back up the same day (she had to come back to Sydney for a job interview) and I decided to experiment with the boost pressure and set it to 1 bar.

I got 10.6L/100km for the trip up, and 10.4L/100km for the trip back. It was slightly worse on the way up because we had a little bit of city traffic to get out of before hitting the highway.

Guest rcd

Guest rcd

Posted
Posted

I guess I should have kept my mouth shut. Some of you guys are doing worse than me . Last fill up was 320km from 45litres, around 20MPG

Realisticly, I shouldn't complain as my Bedford van (work van) with a 400 Chev gets around 12 MPG. It carries a fair bit of weight though.

Guest KILLER-T

Guest KILLER-T

Posted
Posted
my Bedford van (work van) with a 400 Chev
Sorry to get of topic but i seen this bedford van at the end of the midland bypass a while ago it lined me at the lights and took off like a rocket (well it looked fast for a bedford) MMWAHAHA a bedford tryin to chop a SKYLINE :shake: :shake:

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