With the .55 housing (which bolts straight onto the evo manifold), the US guys are getting 300 - 350 awkw with 20+psi by 3200 (typo) 3500rpms
If you upgrade to a bigger exhaust housing (i.e. .70 T3 housing) they are getting 400-450kw.
It can flow 60lb/min but with the .55 housing most people see around 52lb/min
It is often referred to as equivalent to a GT30 (but spools faster).
The previous owner ran a 11.8 with it if that helps.