ok im goin to run a b20v on my eg8 wat ecu should i run the p30 or the gsr p72
i kno the p30 is for b16 rite? and of course the p72 is for the gsr. what the diff on them ??does it matter if i change the ecu on th gsr and thoes it matter if i run a p30 setup on the gsr head ..would it make more power or higher rpm?? let me kno what u think i should doo ... thanxz

 

any ecu will work as long as it's VTEC, though you really should tune it.
P30 or P28 if you get a ITR style intake.
P72 if you keep the IABs (stock GSR intake)