Imo GH wrx can make 300whp, My car made 297whp, cause I ask Mao to tune it ultra safe (10.3 AFR, absolute zero knocking correction on multiple runs, and 19 psi, boost spike to 20psi).

GH wrx has same injectors(565cc) and VF48 and VF52 is the same turbo with different shape of comp housing(due to the shape of tmic), U just need CAI, fuel pump, TMIC, Boost solinoid and inlet for a bit more response.

BUT the turbo and injector will be maxed out, and may not c the same number in summer (less dense air). PLZ get the kinugawa turbo, really wanna c the feedback.

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport