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It's really hard to tell how accurate the factory boost gauge is as it has no numbers on it


If I had to guess, it looks like you are at ~8psi though.

Get a real boost gauge on there (T off of the vacuum line going to the gauge cluster) if you want more accurate readings
 

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If I recall correctly a LPT is 8 and a HPT is 10 without modifications. Someone correct me if I'm wrong.
 
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