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      11-30-2012, 12:29 AM   #17
Wedge1967
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United_States
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Drives: '07 e92 AT Sport Montego Blue
Join Date: Sep 2011
Location: Portland, OR


Posts: 2,172
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Quote:
Originally Posted by OECMG View Post
I don't really understand are you talking about low fuel pressure flow or high fuel pressure flow? They are different things.
Yes, two very different things. Your LPFP feeds the HPFP and if it can't maintain the required pressure, your DME will trigger a LPFP code. Replacing the LPFP could increase the pressure and volume, but eventually you will exceed the volume required to supply the HPFP with a single pump.