fuel will go to zero every time you take your foot off accelerator especially when coasting, not when at idle.
those figures dont look too bad but as remapped it would be a guess to what they are supposed to be,boost looks higher than std maf looks ok compared to boost so.
do some full throttle foot to floor
check accel position actually goes to 100%(can do with just ignition on i think no need to be running)
repeat some test logs and log desired boost and actual boost and actual maf and vnt%.
desired rail pressure and actual rail pressure and rail pressure regulator % maybe.
and another with total fuel, actual boost actual maf, revs
as you only peak in the 60's where i would expect a mapped car to be pushing 77-85mg/i say 3000revs foot to floor 3rd gear.
possibly something going out of range and cutting fuel?
also although youve cleaned egr valve we see a lot who have done same and eventually blanked it to confirm, and found a big improvement so maybe a blank on egr would be next easiest thing.