This is by far the best OEM turbo offered in US from Subaru. These are equipped from the factory on 2008 STi's, and the turbo has been proven to be able to produce well over 300WHP, and over 370 lb/tq at the wheels . This is the best upgrade for 2.0L or 2.5L Turbo models. As its has very minor lag, and produces huge amounts of usable power in the lower RPM range.