Just go with a new vf52, I'm on stock fueling with a smaller boost pill and make good #'s. I also have the banjo filters removed and stock oil lines.
210,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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