Is 7 to 8 psi safe?

I saw 5psi in the lower gears 1-2 and 6psi in 3rd and on when I was stock, except for a boost gauge. Before the turbo upgrade I'd see almost 8psi probably 7.5psi to be accurate.
 
I ran like 5.5-6 stock, now i boost 8-9 with the spring mod .
That BOV looks like the one i keep seeing on Ebay!
 
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