i am currently running stage 3 with greens and t34 .48

i am looking for just over 400bhp what injectors chip etc will i need to get this? i heard the seimens injectors are better than the greys for fuel eco and they just dont dump fuel?

or am i better to just taking the greens to there limit and be happy? lol it will only be for fast road use but would like to say she is 400bhp if you no what i mean!

cheers matty