I've had standard t3 turbos with -31 piss 200lbs at around 180/190bhp
Another I had was 215bhp 223lbs on stage 3 t3
And 231bhp and 253lbs stage3 t3 nms modded metering unit
All on 1600cvh on mfi with correct supporting mods
You sure it's a genuine garrett turbo, could be a copy