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      11-30-2012, 12:37 AM   #18

Drives: 2008 328xi
Join Date: Oct 2012
Location: PA

Posts: 46
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Originally Posted by Wedge1967 View Post
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.
Cars running the bigger in tank pump are getting a LPFP code and those running the booster pump are not? ign335i said using the single larger pump prevented the LPFP code too.