There's a million people who will tell you about a magazine article where they sprayed it until it melted a plug. They were supposedly close to 200shot. If you could supress detonation I would bet 2 stage 100shots would be doable. Even then you're spraying out alot of nitrous and you "might" "maybe" runs 12s.
On another note. I sprayed my 100% stock turbo motor with a 100shot several hundred times. My semi stocker from last years Project Bolt-on took 100shot and even a 125shot with 20+psi of boost.
I never had a running 2.3 car to test it on. so install a kit correctly and spray until it dies... You could tell us.