You need to get your air pressure to hold first as it sounds like the primary suspect. I had a similar problem when the bottom of my accordian hose to pipe under the headlight had bent and wasn't making a sealed connection. I kind of doubt PCV's would be at play if you're losing air pressure that early in the system. The higher you force boost the more critical it becomes that everything is right. Other things that could affect you: -Wrong spark plugs -Timing belt in wrong position -CAS/Timing not set properly -TPS not set properly -Not getting enough fuel pressure (Check Ash's 6 P's) -MAF readings wrong -Low octane fuel
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