These part should give u at least 300whp with plenty head room and response.
Tial 38mm external wastegate and grimmspeed IWG bracket if u can stretch another $600
Do it once, do it right.
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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
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