Box differences?

[masterbusa2]

How much of a difference would a 15" sub with a displacmmt of .21 would it make from a sealed 1.54 cu ft box to a 3.75 cu Ft ported box spl wise would it be alot more bass or only a little it's a power acoustik 15" fubar 2000 peak 1000rms oh and ported tuned to 35.42 hz