I use a manual boost tee for around 10 psi
they are fine for low boost
but as soon as you start pushing past the 14psi mark they seem to spike all over the place
and yes as Pal said have a look at your boost curve and if its droping from 10 psi to 8psi or something then a EBC will help
but for the time being if your not getting a spike or boost drop then i wont worry about an EBC