As far as boost pressures go, My Stage III has been running at 9lbs with no major issues for about a year now. TomsSVX was running around 12lbs and his ring lands gave out. The only issue we're having with our setups is the breathing of the engine. The heads and cams cant scavange enough of the gasses out at higher RPMs. Our dyno graphs are a down hill slope. You can check my locker if you want to look at the dyno plots.
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