So after recent engine failure car is back on the road now and im probably going to keep it for another few years to enjoy it a bit. So its a 2003 new shape legacy and has following setup:

Fully rebuilt ej20y with forged rods and pistons, refurbished heads etc
all new ancillaries belts etc
upgraded oil pump
vf36 with uprated actuator
turbo back exhaust with center sports cat
Hyperflow TMIC
standard injectors(approx 500cc)
5MT
Currently running 1.3 bar during run in period

These jdm legacys have similar setup to the jdm 08+ sti hatch so similar AVCS heads and plastic intake manifold and twinscroll setup

I will be swapping to a HDI FMIC and CAI kit over the next few weeks and getting a tweak map. So what kind of power potential would the above setup have? Last dyno run had pretty bad results, car suffered badly from heatsoak from increased intake temps on the dyno and IAM dropped to .6 so power was down to 305bhp. i was told by mapper it was more in the 330~ range, and it was keeping up with a couple WR1's/sti's during the last track day.

Another bottom end failure is always in the back of my mind too so always weary about upping the power. Should be more resilient now with the forged block.

Any advice welcomed!