Target set map-tarter, boost-target use aditional MAP sensor
boost control refference position=irrelevant, becouse you have whole table(pwm)
boost control target offset=0, long story
See pwm table
rpms are rpms, a first 6. rows are gear.
What firmware you have(12x12 or 14x16)?
And you can use tps scaling for enabling N20 only at full throtle, but i will recoumand to use NO2 option.