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While it may seem that direct injection is just the latest and greatest way to dump fuel into an engine, the reality is that DI technology is the absolute best way to inject dead dinos in an engine. How so? Past efforts to increase power and fuel efficiency, while laudable, all had at least one serious flaw in that they were injecting air and fuel into an intake tract ahead of the actual combustion chambers, relying on a series of educated guesses on how that mixture would react when ignited. Direct injection gets its name from the process of squirting the liquid fuel directly into the combustion chambers, and modern computers with previously unheard of processing power make it all possible.

To see the benefits of such a system in action, look no further than the 2009 Porsche 911 and, um, the Ski-Doo MX Z X. Winding Road put the two machines up against each other and found that both vehicles were pretty evenly matched competitors when it comes to straight-line acceleration on their intended surfaces, though things would surely change if both vehicles were on equal footing. Read the whole story here.

[Source: Winding Road]

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