Have you thought about replacing the o-rings between the intake and TGV's ?
Have you done a boost leak test ?
Have you cleaned the MAF sensor ?
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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Last edited by Max Capacity; 10-17-2012 at 12:56 PM..