i installed the new wideband sensor. took it for a boot and to my suprise the "stock" bin file was showing 12s afr at wot. i copied some of the timing maps from my previous tunes. i need to smooth out some of the low and high load maps.
all in all it looked like all i needed was a new fuel pump. TRE 240 same as the walbro 255L/hr pump.
just a quick thanks to Rocco from RMP for suggesting to put the stock injectors in to solve the high fuel issue.