Honestly I don't know the specs on it, it was supposed to be comparable to the turbo that originally came on the Z7 turbo kits back when they first came out.
I believe ZZP said my injectors were pretty much maxed when they dyno tuned it. Wanna say 100%+ duty cycle. Something about being an 04+ return less and having more headroom though so they weren't worried since I was just pushing 9psi.