fitting a new exhaust, tweaking the intake, raising turbo boost or modifying the engine management. But that last one ndash; engine management ndash; is almost never thought of as a way of gaining better fuel economy. But in these days of ever-increasing fuel prices, electronic techniques can be used very effectively to improve fuel economy.
And it rsquo;s a benefit that you can enjoy every minute that you rsquo;re driving - not just when you put your foot down.
be legal, slightly illegal, highly illegal or completely illegal..
. all depending on where you live and the laws that locally apply.
ndash; wait for it ndash; the air/fuel ratio.
In everyday driving, nearly all cars hold what rsquo;s called a stoichiometric air/fuel ratio, where close to 14.7 kilograms of air are mixed with each kilogram of fuel. The oxygen sensor(s) positioned in the However, while a 14.
7:1 ratio is good for emissions, a richer air/fuel ratio is needed for best power. So when high power demands are being made, most car systems change from a 14.7:1 air/fuel ratio to one that is much richer.
Richer mixtures ndash; eg 12:1 ndash; mix the same amount of fuel with less air, or, to put it another way, add more fuel to the same amount of air.
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