[boostedf22c]

I wouldn't go past 80-85% duty cycle. You run the risk of the injector not being able to open and close quickly enough which can cause an injector to "hang". This could lean out the mixture.

You can compensate this with more fuel pressure, and even run past 100%, however that is a bandaid. If you are in the 80-85% range, I would get bigger injectors.

Injector Dynamics are some really nice injectors that are high impedance.