well 4psi on a pair of t70’s might shake things up a bit
I doubt it, 4psi i’m flowing less than 20lb/min…at 38psi i’m flowing 75lb/min 
and t70’s are 1989 
They are but remember how long ago i started my build…at least 89, maybe 88.
yeah i run 4.5pounds of boost on a garret gt40 bb and people laugh at me all the time 