I think that according to every thing I have ever read, they will find that using a stand alone or robtuned ecu IS the most practical way to tune the ej22t...but it's not worth arguing over.
This runs completely counter to all the accumulated wisdom on Legacy Central.
The ej22t ecu is very limited in it's capabilities.
Standalone or ej20g ecu are the de-facto options according to everyone who has years of experience messing with these things.
This, the thing to do these days is use an ej20g ecu for your ej22t and there is a guy that will tune it for you, look on legacy central, search for "robtune".