LC-1/XD-16 afr not matching hpt scanner afr

when my xd-16 reads 14.7, my hpt is reading 14.3. i wired everything up EXACTLY as soundengineers diagram is so its not a ground or wiring issue. can someone PLEASE help me figure this out. trying to tune my ve table like this is kiling me! why does have to be so freakin difficult, ugh!

you just need to calibrate it, either in the LC1 or HPT. I chose to do it in LC1 and LM1 so I can use it on any other car or any other program without issues.