Good luck with your car. The VF34 is a ok turbo but lacks compressor flow on a 2.5 (good on a 2.0 litre). I would have recommended our new GTPS03.5 (TF06-712GTP). Latest TF06 turbine technology with our GTpumps 712GTP billet compressor. This turbo is not our web site yet but some info is on our facebook page.

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GTpumps.com.au
Performance turbochargers for Subaru WRX/STi and Lancer Evolution
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