Logged 187.5g/s on my AUQ engine with plenty of mods and stock turbo.
Did not expect way much above, since K03-052s are said to not be able to give more than 235bhp without destroying themselves. However, after fitting a 2.5" Milltek cat-back, logged a spike of 201g/s around 5500rpm during an overtake, which should translate to a peak over 250bhp.
Some people here on the forum dynoed bhp in the 250 range and lb/ft in the
280 range on K03-052 turbos. So a value of 200g/s is hard to get, but not impossible if many supporting mods
help the airflow and gas flow at the exhaust.