Hey y'all there's a thread with a few people that have used the B58 HPFP plunger and modded wiring harness with claims of 13% higher fueling. I'm following the thread and investigating more but if all is true then the XDI $2k HPFP can be skipped.
HPFP New Option
https://f30.bimmerpost.com/forums/sh....php?t=1589774
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535i MIssion Performance, PS2, Helix HPFP Kit, Wagner FMIC, Spec 3 clutch, Steel SMF, Wolf Racing CP, UUC SSK, GFB dv, SprintBooster, Custom Dynomax Exhaust, M5 Sways, Eibach OE Springs, Koni Sports Adjustable, Custom Short Ram CAI
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