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LPFP is easy, HPFP not so much. There still isn't a proper HPFP upgrade for the N54 and that's been out for 13 years.
Looking at our HPFP, it looks very similar to the N55 ones. So I would expect something like the XDI HPFPs shouldn't be too hard to adapt to a B58.
I know some N55 people have bolted on B58 HPFP as it is supposed to be slightly better.
Then you need the tuners to support it, I know MHD and BM3 have built in support for XDI pumps on N55s.
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