JB4 Stinger Fuel Wires ADD-ON 840i (G16) The MST intake system allows
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Ships within 48 hours · Estimated delivery Oct 31 - Nov 5
Live Spec
JB4 Stinger Fuel Wires ADD-ON 840i (G16) The MST intake system allowsThese 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.
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