Its becoming a more seen upgrade now.

rather than running with 4 greys you could run with 8 greens.

fuel control would be alot easier, run only 4 of the injectors up to a certain boost level... and when the boost hits a certain point all 8 injectors would be working.

ideal way to use it with a pectel boost control!

but its a good way for extra power, similar in theory to the RS500 style but just siameese.