Injector size and #s

[bbqjmaki]

I'm working on a new build looking around the shop and came up with a set of injectors from a HPI 48mm throttle body with the  IPW# 143  , my stock injectors have the IPW# 043. Is IPW (injector pulse width)? Do I need the bigger injectors? My build 95" with flat tops ,83cc Big Boyz heads (grooved), Andrews 26g , 1.675 roller rockers , SE back plate with K&N filter, breathers routed to atmosphere, and all the rest of the normal stuff we do oil pump sring and washer,true duels, PC3,.03 cometic gasket , I all so polished the intake to remove all the casting lines and let the air flow faster to the head might help, might not, but why not. 
John

[Lovetoride007]

bump

[bbqjmaki]

After researching most of today the #'s don't mean S##t ! The color of the band on the injector is what determines the gps (gram per second), still don't have the size for each color yet ? One set is white one set is brown , I have seen a set that was yellow. In the morning going to call dealer and get them to call Harley tech line see if they can shed some light on what I found today. Even if I'm right about the color?
John