180sx redtop idles fine with new Alexi power fc, as soon as it’s given throttle it stumbles and dies

[Porka]

Hey guys, new to this forum, here it goes,

i installed a power fc into my 180, at the same time I put in 740cc nismo’s, Walbro 255, z32 afm. The car starts and idles fine, but as soon as it’s given any throttle it goes to stumble die so I let it off and it goes back to normal, I have selected the z32 afm in the hand controller settings and also set up the injectors etc, need to get it drivable to get it to the tuner, also the power fc is new so doesn’t have a pre existing tune on it, 

anybody have any ideas as to why it could be doing this? Cheers guys!