ECU REMAPPING & HARDWARE STAGES

Modern BMW powerplants are massively over-engineered. Software alone can unlock what was once supercar territory.

B58 3.0L I6 Petrol

Often called the "Modern 2JZ," the [B58 engine] is incredibly robust.

Stage	Typical Output	Required Mods
Stage 1	400-420 HP	Stock Hardware (Software only)
Stage 2	480-500 HP	Downpipe, Upgraded Chargepipe
Stage 3	600-700+ HP	Hybrid Turbo, HPFP Upgrade, [E85 Fueling]( )

The [B57 diesel] is a traffic-light king, offering brutal low-end torque.

Stage	Typical Output	Notes
Stage 1	320-330 HP / 700+ Nm	Increases response dramatically
Stage 2	380-400 HP / 800+ Nm	Intercooler & DPF optimization

These are "S" designated motors with forged internals, ready for the track.

S58 (M3/M4/X3M): A twin-turbo evolution of the B58. [Stage 1 alone pushes it to 600+ HP].
S63 (M5/M8/X5M): The 4.4L V8. [Stage 2 builds commonly reach 800 HP], turning it into a "locomotive" on the highway.

* Performance figures are estimates. Always use high-quality fuels (98/100 RON). Stage 2/3 may void warranty and affect emissions.