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fuel consumption problem

hippy

By hippy,
in Engines & Forced Induction

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hippy Grand Master

hippy

Posted
Posted

i agree with dj there .. well about the feul gauge moving down faster when u pressing the pedal harder ... i notice that all the time ... i always measure from the time i fill up the tank to get how much i have actually used cause the gauge is pretty inaccurate ... i can drive my car hard all day long and only loose maybe 50km to a tank ... although my car is pretty much stock ...

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siksII Grand Master

siksII

Posted
Posted

On a few long trips (500km+) over the last 3 weeks i averaged 10-11l/100km with average speeds of around 140km/h, and including a few laps around bathurst (couldnt resist) plus some urban driving.

I was amazed, as in the city, my car drinks between 16-18l/100kms, a very large difference.

The only mods i have are an in box filter, catback and and fuel pump.

btw. I just realised that the difference between urban and highway driving in my skyline is how much my swift gti drinks altogether lol

franks Veteran

franks

Posted
Posted

on my stock ecu and stock boost i would average 14l/100km this equated to roughly 350-400km a tank with a mix of highway and city driving....

with the powerfc tuned and running 1bar boost i think i will equal or even better this average and that's with all the hard driving i've been doing. i'm waiting on the fleet report for next month prove this though.

a good tune makes a big difference to both performance and fuel consumption. currently i'm running a tad over 12:1 a/f ratio on full throttle, whereas with the stock ecu and stock boost i was at 10.5:1 a/f ratio - just way too much fuel imho... ;)

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