Fueling mods from OP: PI spacer with 950cc injectors, AIC, Walboro 535 pump in PFS DIY bucket, E57 on dyno day.
I need to add in there the BPM4.
I am early E-series N55 so there is no high-pressure fuel pump upgrade. My pump is the same as the N54. Hopefully this helps but feel free to ask any additional questions you may have.
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