Does anybody know the differences between the 05 WRX & 05 STi by pass valves and if the 05 WRX one will go onto a STi intercooler without any problems, I mean operation wise not fitment, when I upgrade my intercooler in the near future??

I believe they are the same.

I put a MY01 bov on a STi cooler and it goes on no problems and has worked for 5 odd years with no difference.

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[SIGPIC][/SIGPIC]
Should have bought an STI