JB4 Stinger Fuel Wires ADD-ON 840i (G16) resulting in measurable power gains

resulting in measurable power gains and a more responsive driving experience for your N63-powered BMW

Direct-fit applications

Relocating your N54 inlets with the ARM system boosts power and torque by up to +60whp/60wtq

denser intake airflow for superior combustion and enhanced performance

The MST intake system allows a significantly greater volume of air into the engine compared to the restrictive OEM setup

JB4 Stinger Fuel Wires ADD-ON 840i (G16) resulting in measurable power gainsThese extra Fuel Wires into the JB4 harness allowing it to tune your air fuel ratios, leaning the tuning out at higher RPM has resulted in significant additional power gains. Note new JB4 systems include these fuel wires in the harness already.