With the powerplant, Honda aimed to “create the purest, most enjoyable midsized four-cylinder performance possible.” That means, for one, the power is up. The 649cc, DOHC, 16-valve engine is claimed to deliver 5 percent more power above 10,000 rpm. Peak power arrives at 12,000 rpm (1,000 more rpm than before), and peak torque is delivered at 8,500 rpm. The extra power was accomplished with more revs, higher compression ratio (from 11.4:1 to 11.6:1), and revised combustion-chamber shape. The valve train is also reinforced and valve timing revised, with new iridium spark plugs as well.