HELLLPP !! JUST INSTALLED A DRIFT IRIDUIM BOOST GAUGE AND ITS READING 9PSI AT WOT. I VE GOT A WRX STI JDM V3/4 AND FITTED IT TO THE SPARE NIPPLE ON THE MANIFOLD IS THIS CORRECT OR IS MY JUST RUNNING LOW BOOST??? ANY IDEAS

 

9 Psi does seem a bit low, I would expect to be seeing at least 0.7 bar or around 11 psi which is standard.
Have a check for leaks, re-check pipe work to guage.

 

how do i check for leaks i.e where from etc etc ..

 

mines gone the other way 22psi :-s

 

V3/4 Sti is 1.1bar, around 16psi