Quote:
Originally Posted by Matt @ FSP
Of course depends on every situation, but yes you want to keep FP up. Once you hit the dip into the 4x range then I would consider the upgrade and of course base that on your future goals. This does not really matter so much for boost or N/A, it's a generic comment. Fuel pressure is one of the lifelines to the motor, this is nothing to play around with.
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My motor just don't seem to be very efficient. After the maggie I put the ZL1/ADM controller in and pressure was dropping to 39-40psi. AFR was holding good but would lean out past 6000. So I bought the Livernois dual pump. FP still drops 47psi at 6000+.IDC is around 75%. I put a KB on it but it seem to have no affect on it. I finally just said the hell with it. AFR holds good thru the run.