but if you dont have that gear feature and you have a spooling turbo of 4000rpm, if you do ask from it to boost from earlier rpm wouldnt it do the same thing anyway?
for example if you have a turbo that gives you 1 bar @ 4000rpm on 1st , 2nd, 3d gear (but it also gives you 1bar from 3500rpm on higher gears) , if you map to ask 1bar from 3500rpm , wouldnt it give you the same thing anyway?