Fuel-It! Port Injection Kit (Elite) — S55 (F80 M3 / F82 M4 / F87 M2 Competition)
Fuel-It! Elite port injection kit for the S55 — F80 M3, F82/F83 M4, F87 M2 Competition. A six-port supplemental low-pressure injection layout that backs up the S55's direct injection for big E85/methanol power (Fuel-It rates it up to 1,000+ whp with the right injectors).
What it is
Fuel-It's Elite build — anodized billet manifold spacers with a return port, an upgraded fuel line, a billet rail, six manifold ports that run flow-matched injectors when you add them, an adapter, and a port-injection controller. "Elite" is the M-grade tier (the extra machining is what lets it fit the S55). It supplements, not replaces, the factory DI; injector size sets the ceiling.
Options
Two choices in the configurator. Injector — choose "No injectors" to reuse your existing set or supply your own, or pick 550 / 750 / 950 / 1050cc; injector size sets the power ceiling, so size it to your fuel and target. Controller — select Standard, or step up to the CANfuel Sequential, Fuel-It's CAN-bus sequential controller for finer fuel control. Make both selections above.
Where it fits in the build
Supplemental fuel for high-power S55 builds. We tune the engine to the fuel system.
Fitment
S55 — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition. Confirm your chassis in the selector.
Sourcing fueling with the tune? The Fueling Kit — S55 bundles the matched parts + calibration for 8% under à la carte.