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The new Si is still powered by a 1.5-liter turbocharged four-cylinder. The revised engine makes 192 pound-feet of torque and 200 peak horsepower. Interestingly, that's down 5 hp from the last generation's 205 ponies. Honda claims the new powerband is now broader overall and now peaks at a higher RPM, which should improve responsiveness, performance and driveability across a wider range.