Asura uses Curaengine and the same profile setting. However, because cura often changes several settings automatically when you adjust just 1 separate settings, it is not as simple as editing the profile. There is no simple way to do it for setting that triggers multiple settings update. The only way to do it reliably is to pick up cura entire profile setting dump when you slice a model and merge that into its printer settings to get the full profile (that is what I did to make those Asura profiles) So, yeh, it is not very easy.
An easier to do it would be just add support in Asura and slice in Cura 3.5.1 with late profiles.