| The new style 555s will actualy flow 615 and the 530bb turbos will never push them beyond their cycle duty. Of course if your brain falls out and you decide on a half-assed NOS system:(I say this as there are a handful of systems running safely with big dollars behind them), Then you WILL need the bigger injectors. Way bigger than 740s anyway. FWIW,  you can still only run 18-19lbs on pump anyway. A "balls-out" build on 530bbs is about 481WHP on pump. Don't get the 740s without the bigger turbos, it's overkill.   
  
    Gotta....Have....More.....Boost!!!!!!
 
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