Yesterday's tune on AARH SPEC's MY12/13 STi.
Ecu on these newer models are very different. The factory settings will cause the AFRs to lean out with just an exhaust upgrade, so a tune is required.
Mods on AARH SPEC included full XForce
TBE and Process West CAI.
Tune yielded 304.3hp and 464.7Nm. Boost was maxed at 1.44bar@4750rpm and tapered down to 1 bar@6400rpm