fuel economy (or rather lack of)

[Pekatu]

I recently purchased a R32 m spec and have jsut about used the first tank of fuel and am very dissapointed.

The guage has just gone below 1/4 and i have only done 270k's, i had optimax in and have not been hammering it at all, is the typical of the skyline?

[JimX]

You might have a problem. Usually mixture related, possibly a faulty AFM, or bad tune on an aftermarket ECU. Going off the fuel gauge isn't very accurate though, fill it up and work out your L/100km.

Anything higher than 15 or 16L/100km around town usually indicates a problem. But even if it's fine, you can usually tune it and get it down to around 14 or less. Low 13's is pretty good, anything less is a bonus. On the highway you should be getting around 10 or 11 tops.

[coco69]

i rarely ever get 300km's or over per tank on my r32.

although i do average amount of fanging per tank, but i find my economy rather low overall.

[cyrius]

500km's to a tank in the 30

[Lepperfish]

If your cars putting out reasonable HP its going to use fuel...l.

LePpErFiSh.......

[JimX]

Lepperfish, but if you never floor it you shouldn't use much more fuel than a stocker.

[adam 32]

yeh thats pretty bad fuel economy, i get around 180km/20L

[chicane]

My r33 GTS4 (non turbo) has horrible fuel economy.. sure i do drive with the foot down a fair bit but even then i get around 16L/100KM.. i havent had it actually "tuned" since ive had it (1year) but i thought the ECU does that itself?

[Guest RedLineGTR]

you should in general get about 400k..out of a full stock..skyline...depends on model...this is with driving like a granny some people get that amount with hammering..

[HSVKLR]

Aftermarket BOVs apparently can cause poor fuel consumption. In my case im certain the BOV was the sole reason why i went from high 400s to high 200s-mid 300s.

My fuel consumption has taken a further hit this week with 12psi of boost on low setting....

[R33 Impul]

I was struggling to get 380K's out of a tank running BP Ultimate, new sparkies and cleaned the AFM and first full tank 438K's and fuel guage is sitting between 1/4 and empty.

[coco69]

i noticed that if i dont heel-toe every time i downshift and turn, i save heaps! its such a habit nowadays...

[Mr R32 M-Spec]

I can get 440 KM's to a tank most weeks on my R32. I tend not to drive hard too often as it is annoying in traffic to have to slow down. I have a FMIC, Exhaust, Air filter, fuel pump, boost controller.

[Pekatu]

my car is fully stock, probably only spend about 20% of driving time with the bost gauge in the positive boost area.

so it would be a good idea to get some new plugs and clean the AFM?

if this doesn't work does anyone know of a good tuner arounf the liverpool area?

[franks]

related threads on this topic are rampant throughout this forum, do a search and see what other people are saying....this only indicates you're not the only one who thinks they have fuel problems/issues - so is it really an issue or is it just paranoya???

imho, in sydney, because of the traffic and petrol quality i would be extremely surprised for a stock rb25 to average better than 350-380km a tank. i've noticed people from victoria with extremely good fuel consumption figures, but they dont have the traffic of sydney, they probably have better fuel & it depends on the type of driving they do...highway vs city

i have a powerfc tuned to about 12:1 AFR and i will consistently hit 400km with a mix of city/highway/full throttle. before the tune i would be lucky to get 380km per tank.

unfortunately, you can't tune your ECU as its stock. you will have to get an aftermarket fuel controller (apexi safc) or replacement ecu to do this.

how many km's has the car done? if its not time ie. 50,000 or 100,000km's you might try as everyone says, re-gapping your spark plugs, replacing your airfilter element, cleaning your AFM & replacing the fuel filter.

...but otherwise, live with it! its a 6 cylinder turbo. its a performance car. performance requires fuel. having said all this, you're still doing better, from a fuel consumption perspective, than a V8 or Rotary!

[Pekatu]

Hey franks, i was not complaining, just surprised, in my old 180sx (2ltr with 14psi exhaust etc) i used to drive with the throttle fully imbedded into the carpet most of the time and it still returned better figures than my skyline and this surprised me, that is all