I am not to worried about outflowing the standard injectors or 803's for that matter.
The Weber-Marelli software has a unique feature that will lower the turbo boost when the injection times are longer than the time needed for 2 engine revolutions.

And as I said earlier, a specific fuel usage of 320 grams/Kw is more than enough.
I do limit the turbo boost, but that's because you can't measure more than 1.1 bar with a standard map-sensor and I do need a small window to regulate the boost pressure.
I consider using more boost than you can measure very, very bad practice and I wouldn't use such a chip anyway nor would I advice anybody to buy one. In the contrary, I would advice strongly against it.

As for the bigger turbo's spending more time off-boost, that's what I call a BIG disadvantage. It will also lead to drivers staying longer in a lower gear and making more rpm's to get a decent acceleration. And that only benifits the oil companies and their share holders.