For naturally aspirated engines, 100 horsepower per liter is a high bar, 200 hp/l is a fantasy land. In that realm we’re looking at the BMW S1000 RR (999cc / 193 hp) and the Mazda RX-8 which doesn’t even have pistons. For turbocharged powerplants 100 hp/l is old hat, but 200 is still impressive territory occupied by sporty things like the Mitsubishi FQ-400. 177 horsepower per liter isn’t a record, but it is an impressive figure for a 1.0-liter even if it is boosted.
At least, it is if it’s true. The latest rumor out of AutoCar is that the 1.0-liter EcoBoost three-cylinder currently in development by Ford gets kicked from 123 horsepower to 177 by way of twin sequential turbocharging with an electric supercharger in place of the small turbo pumping up the same turbo from the 1.6-liter EcoBoost. Ford is said to have running prototypes of this setup testing now.
The EcoBoost 1.0 is initially set for a home in a performance version of the Focus and, hopefully, the Fiesta ST.
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