[Yoniyama]

According to Car & Driver, more power and torque came from

"The BRZ’s 2.0-liter flat-four has less internal friction and increased airflow, resulting in a small uptick in output of 5 horsepower and 5 lb-ft of torque, for new totals of 205 and 156. Aided by slightly shorter gearing, acceleration is claimed to be improved—at least with the standard six-speed manual gearbox. Neither the higher output nor the different gearing applies to cars with the optional six-speed automatic transmission"

I suppose the engine and intake/exhaust are common for all Toybarus, regardless of transmission. I wonder how they achieve different power for the two transmission, unless the programming is different? Any idea?