From info I gathered, it qas a fundamental ecu programme flaw, which causing delayed knocking correction at high rpm. Afrer recall they fixed it. Neil told me 11+ model also has diff head studs. But newer car always better if u budget allows it.

using the Perth-WRX mobile app

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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

I sold a car to West side Auto Wholesale once and they were really good, and it was a good price too

ECU re-programming and the potential for copper filings to be found in and around turbo piping from a manufacturing defect or some shit along those lines. There was something else but I can't remember now.

Just get vin numbers and call Subaru AUS and they will give you the details of each vehicle and history.

Good luck.

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Bye bye betty blue. Hello F6.