Quote:
Originally Posted by Jeff@TopGearSolutions
Best way to save gas is to stay out of boost, period.
A car in 0 Vacuum may use (arbitrarily) "1700" units of fuel @ 2000 RPM. At the same RPM it would require over 40% (2500+ units) more fuel for 4 PSI of boost at the same RPM.
More Air requires more fuel, which makes more power, plain and simple. If you reduce the amount of power you are making to maintain speed you reduce the amount of fuel used and by no accident there is less air in the engine. Improving efficiency can be done by timing or cam profile changes (where applicable).
The name of the game is definitely to stay out of boost.
For those with manual transmission, stay in gear longer when braking. By going into neutral for a stop light you force the car into idle which runs the injectors to keep the engine running. If you stay in gear until the last second you reduce the amount of time your injectors are firing. As your engine decelerates while in gear it does not need to use the injectors to stay running.
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+1
Yes the more TPS, the more air so hence the more fuel for the correct mixture.
But a turbo charged car delivers on demand power rather than the constant consumption of fuel for motivation.