440's will support 280+hp at the hubs........... on a vf34 as I stated in your other thread.
Yes I have cams in mine, but Damo was making 267hp with a vf34, stock ej205, 3"
tbe, 440cc injectors, silicone intake, GD sti cooler & a powerfc.
have a look here:
Fancy new performance thread
And see what other have made with a vf34 on various cars.
You are way low for some reason?
Was your stock cooler holding it back on the last tune?
If you are maxing your injectors then you have a delivery issue (pump too small, rooted pressure reg or a restriction somewhere).