i just did a combo very close to that and although it is un-finished i was always told that the bigger injectors were always more of a need than the fuel pump. The bigger the injector the less fuel pressure you can run which is easier on the pump. I chose 24's for my combo and that seems to be a very popular choice. 30's are also a good option
I just can't buy into that line of thinking
When talking EFI fuel delivery systems ........
You deal with high pressures
Now ... if you up the size of inj ... there is gonna come a point ......
somewhere along the line ... where you won't have the volume
to maintain that needed pressure with the stock pump.
That would be like increasing the size of a garden hose
at the water connection of your house. Sooner or later,
you will find the amount of water is not gonna increase
with a larger size hose because you can't feed more volume
from the water connection.
anyway .......
If you wanna make more power
You gotta pump more air through the motor
Sooooooo
You gotta have the fuel to keep pace with the additional air flow
Yes ... You see it all the time .............
Peeps make a good bit of power with stock inj's and pump
and usually
They get by with elevated pressures
Here is the thing however ..............
If there is ANY amount of inadequacy at ANY point in time
during a WOT condition
You run two risks here
1) Motor Damage is the worst thing that can happen
but still .......
Say you are close to the limit and do no damage
2) You could be leaving power on the table from being too lean
Grady