R33 Fuel Economy

[bombastic]

bombastic, is that city driving? or highway? or both?

how are you finding that solenoid boost mod? big difference in performance?

IIRC it was all in the suburbs/city.

When I first did the mod I thought it was a fairly noticeable difference, now I'm just used to it, so I'm waiting on a turbotech boost controller to bump it up a little

I don't see why performance should chew up heaps more fuel, unless you get on the boost every time you take off. Even then, you're still only accelerating to the speed limit and then cruising - what difference does it make if you burn fuel at a high rate for a small period of time (neglecting running rich on boost etc.), or at a low rate for a large period of time (like a grandma)? Either way, you should have a similar amount of energy being converted into motion and heat to get to cruising speed. Of course if the next set of lights go red then I can see how it'll be a big waste.

Excuse my skewed and probably-wrong theoretical world view

[bluer33]

i got 450kms last time filling up it was on 50lts 1/2 city, 1/2 freeway. 10psi, cat back, home made cai, safcii.

[Munkyb0y]

i reckon the safc might have a bit to do with it.

i'm sure mine's running rich, but with stock ecu, and no safc, i cant really address it.

already did the O2 sensor. pffft, shoulda spent the 150 on fuel. lol

[AdamsR33]

Mate i got a stock 33 s2 only mods are exhaust and pod, i constantly get 450 to 500km per tank, but thats before the light comes on, i did get 520km once just as the light came on, then filled up, still had around 5-8 litres left in tank. I don't boost it much manly drive just to work and back and occasionally weekend fang.

[Munkyb0y]

does it involve alot of highway k's?

coz i get like twice as much if it's highway.

[bluer33]

dude to the petrol price being so high, i think if you guys get an safc and tune it will pay if self of in the long run. safc $350 tune $120. 98 octain is $1.40 at best.

[Spook's_Skyline]

have been getting 300ks to a tank for a 200rwkw 4 door r33s1 (yes, they do have fuel lights)

been better since i cleaned my afm, and use 5th gear a bit more

getting 350+ now to a tank (turned o2 sensor back on on pfc)

getting retune down the coast, will be stoked if i can get 400ks to a tank

[AdamsR33]

does it involve alot of highway k's?

coz i get like twice as much if it's highway.

Yeah, sometimes. Although its only for 15-20mins as work is close to home. Don't see much of a change when just driving around town, maybe closer to 450km a tank. I find if i don't boost it much then the fuel lasts alot longer, and besides around town or anywhere for that matter on the street you really don't need to boost it anyway, but then there's the track, where at wakie a few weks ago i went through 3/4 of a tank for the day!!! only did like 250kms!!! Can't wait to see what it uses at Eastern Creek