D16Z6 Vacuum??

YO! I have some problems with my boost gauge, maybe not my boost gauge.
It only reads 16 PSI vacuum when my car is at idle. It read around 19 PSI before i installed my BOV. I changed the hook ups abit for the boost gauge, but i dont' see any leak or anything. I actually re-do the hook ups again just to make sure. But it still reads only 16 PSI at idle.
But when i am driving, and i let off the gas it reads 19 PSI. once i step on the gas, then it changes. Is there something wrong with the FPR?? or something wrong with my boost gauge hook ups?? let me know plz ! thanks !!
Also, it does read 5.5 PSI with my greddy turbo kit when i boost ! hhe.. i finally start boosting :P
I can't wait to boost !! haha.. it was FAST !!! SI?? HAHA.. DON'T EVEN WANT TO TRY NOW.. HEHEHE.. IT'S VERY FUN !
AND THE BOV SOUNDS GREAT.. BUT THE PHHSSSTT IS TOO SHORT ! I WONDER HOW LOUD IT SOUNDS OUTSIDE ! HEHE...