I don't know the math/numbers offhand...but I would say you're pushing their limits.Better yet...here, read.http://www.2gnt.com/index.php?d=How_to_Choose_Fuel_Injectorsand here... http://www.2gnt.com/index.php?d=Stock_Injector_Flow_RateOK. Edit again, I did the math for saying you have around 250hp and 85% duty cycle. Comes out to around 500 cc/min or 50# lbs/hr. FYI stock injector flow rate is around 235 cc/min. So I'd definitely look into upgrading your injectors.
I contributed to the Wiki.