Also let me add a point to Moxie's calculations. You never want to push the injectors to 100% of their capability...it just not efficient. It'd be like using a 75ft-lb torque wrench to tighten your head bolts to 75ft-lbs; at full scale the accuracy and sensitivity just isn't there. If you run the calcs and it says you're at 18.2lb/hr, I'd still upgrade. The injectors vary, the BSFC is a guess to begin with, and there's a ton more variables that could push you over the edge. If the calcs are within 15% or 20% of peak, I'd upgrade.
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Jeff Chambers
Trophy Stock #3
11.86 Seconds / 113.8 MPH
Chambers Racing Team