depends on how long ago it has been rebuilt...if ever. im constantly hitting 40-50 psi on my stocker and i plan for the bearing to last 6-8 months. i think our turbos are plenty capable of supporting 28 psi for a long time1 1/2 years if the bearing was good to start with.
oh yeah its all relitive for me a long time is over a yearLOL
My EGt'S are usually between 1200 & 1350 at 30 psi. I don't keep it there very long. Just long enough to get in front of the Dodge in other lane. For the most part I hang around 600 degrees at 5 psi running 70 mph on the hwy.
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