BMW M140i
B58 3.0 Twin-Turbo Inline-6
The M140i is one of the most tuneable platforms BMW has ever built. The B58 engine responds brilliantly to remapping — delivering serious power gains while remaining completely reliable for daily use.
Tuning Packages
440-450
BHP
650-700
NM Torque
- ✓ Bespoke ECU remap
- ✓ Transmission tune available
- ✓ Before & after dyno testing
- ✓ No hardware modifications required
⏱ Turnaround: 4–6 hours (same day)
460-470
BHP
700
NM Torque
- ✓ Upgraded intake & intercooler recommended
- ✓ Downpipe upgrade recommended
- ✓ Transmission tune included
- ✓ Before & after dyno testing
⏱ Turnaround: 2–4 days
480-490
BHP
750
NM Torque
- ✓ Turbo upgrade required
- ✓ Full supporting mods package
- ✓ Bespoke calibration on dyno
- ✓ Transmission tune included
⏱ Turnaround: 3–5 days (parts dependent)
Why the B58 is Such a Great Tuning Platform
BMW's B58 is widely regarded as one of the best modern inline-6 engines ever made. It features a closed-deck block, strong forged internals from the factory, and a single twin-scroll turbo that responds exceptionally well to remapping. The result is massive, reliable power gains with no compromise on daily drivability.
- → Factory power: ~335BHP — Stage 1 takes it to 440-450BHP
- → Strong forged internals handle the extra power with ease
- → Free adjustments on all tuning work
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