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Standard injectors are rated about 320ccpm (31-32lbs) at 3bar which equates to a ceiling of something like 35lbs at 4bar on the AAN fuel rail.
What turbo are you thinking of for 650bhp ?
If you post the compressor map I can run some numbers here for you . Thats going to need a mighty fuel pump though - suggest Bosch Mosport 044 if you haven't already got one.
You should be fine... My trusty spreadsheet shows that 55lbs (at 3bar) is enough for that turbo with 4bar fuel rail to approx 430bhp and 500Nm. Thats on 2226cc with max boost of 2bar and worst richest AFR on WOT of 10:1 . I am assuming 85% duty cycle on the injectors - safe limit.
I can't see you hitting 500bhp unless running big revs and/or monster intercooler with water injection.
With a stroker you cross the limits of the 55lb injector unless you raise the fuel pressure to approx 5bar - easy for you I think.
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