im runing one on my rs,
got a full stage thrre head, piper cam, enlarged ports and valves, and port matched inlet manifold (plus obviouse fulling and a few tweaks to bottom end


im currently running around 25 psi att he mo,
there isnt much power below 3 (theres none)
sarts making boost at 3 and comes in really fast from there


not advisable for a everyday car!