Direct-fit fuel pressure connector for JB4 tuning on N55, N20 and B58 BMW engines. Replaces worn or damaged OEM-style harness connectors causing intermittent readings, boost glitches or 'no signal' warnings in JB4 v14+.
Plug-and-play fit - no splicing, no soldering, no firmware tweaks
Robust crimped terminals and correct pin layout for reliable signal integrity
Designed specifically for JB4’s fuel pressure input circuit - not a generic adapter
Fixes real-world faults: erratic boost control, false lean warnings, or JB4 dashboard alerts tied to fuel pressure loss
