^Exactly, the higher the RPM you spin your engine the faster that impeller wheel will be spinning. And unless your maxing the blower out, it will continue to build boost until you shift gears.
Are you saying that @ 5000RPM it hits say "9PSI" and then just stays there until redline? If so, id say you have a boost leak that starts venting all your boost at that point.
^Exactly, the higher the RPM you spin your engine the faster that impeller wheel will be spinning. And unless your maxing the blower out, it will continue to build boost until you shift gears.
Are you saying that @ 5000RPM it hits say "9PSI" and then just stays there until redline? If so, id say you have a boost leak that starts venting all your boost at that point.
My D-1 Procharger makes 3psi at 2500 rpms, 5 psi at 3000 rpm and finally 12.5 psi at 6000 rpm. Centri's that are set up right make plenty of low and mid range boost. If your setup is not intercooled, it should be considered for more power. Air to Air is most popular, but you could do meth injection for more power.