19 psi confusion...

Hi all i recently got an mg zs turbo diesel.



I have been researching about upping the boost to 19psi is a good mod, i am confused over the fueling side though as all the threads about increasing the boost pressure dont mention any change to the fueling side.



So basically i need to know can i up my boost to 19psi and not worry about the fueling side, is there enough fuel already for 19psi.



Or do i need sdi injectors/remap.



I have recently fitted a new maf as it wouldnt rev past 4k, it now pulls well low down goes flat between 2500 - 3500 and then picks up again to 4500.



thanks in advanced



Graeme

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