fuel pump problem urgent

[sultan-ZR1]

Dear all
i have dyno tested my car last night and i got a max of

350 RHP

340RTQ

But with a 15/1 A/R air fuel ratio

i have huge fule starvation on the top end

.

i need a new pump for the secondaries well a wolbrow 255l do it or should i go for a
1992 GMC 454 fuel pump

please i need your help urgent thanks

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[8388]

Sultan, what's your fuel pressure set at ? what is it under a load ? also, are you still running a stock chip ? when was the last time you changed the fuel filter ?