On my 200 with a S14 T28 I get full boost about 3k dependant on gear used which is anything upto 1.4 bar however it only spikes this briefly.
I love the T28 tbh as it makes the car so drivable and like Escy mine is also a 1.8 CA18DET, only thing is it feels like its runs out of puff about 6500rpm in the higher gears.