The only way to make it boost quicker or lower in the RPM range is to either put a small blower pulley on or a big crank pulley. That way it'll be spinning a lot faster at lower rpms. The drawback is that you'll also be spinning it a lot faster at higher rpms, risking damage to your motor if you don't have the internals to handle that much boost.
The only way to have "instant boost" is to buy a pd blower.
I too have a V2 SQ, my boost w/ a 2.95 pulley starts coming in around 2500..just a few lbs but it definitely made a difference when I changed the pulley w/ getting into boost earlier...I have stock crank pulley