by sergei » Mon Jul 27, 2009 5:55 pm
For those who feather the throttle on acceleration, actually this does not save fuel. What you need to do is accelerate at the most efficient way, usually is about 75% throttle, to the cruising speed.
Best way to save fuel is to plan and reduce how much braking you do.
Braking wastes fuel, not acceleration.
So accelerate fast (but smartly, no point of racing to the next set of lights and stopping for red), brake slow.
With boosted car, staying off the boost is just waste, you could drive more economically by using the turbine (moderately).
BTW you can hear turbo when it is in the most efficient part of the map. It produces a specific high pitch noise, that is different to normal hiss/whistle (also not to be confused to old turbo whine, it is at a lot higher frequency, those who go to clubs might not hear).
Also pump up the tires to 2.5-2.75 bar, that makes huge difference.
Saying that, best I got out of GT4 (ST205) was 8L/100km on relatively flat plateau. I really cannot refuse the joys of the hairpins and windy roads to achieve anything reasonable on that (best I got without trying to save fuel was 10L/100km). In city I get 11-13L/100km. My running average is 12L/100km.
I would assume GTT would be pretty similar, although it is little bit heavier I think.
1GGTE in supra would also be similar. Although factory 1GGTE has lesser maximum fuel consumption (smaller injectors, lower boost, less power).