Tuning · BMW M240i (F22 / F23)
M240i
B58 Gen 1
A GT-flavoured coupe with the full B58 Gen 1 toolkit underneath. Hand-calibrated from Stage 1 to a fully bespoke big-turbo build. Choose your package, send your build to Samuel, and get a tune that fits the way you actually drive.
BMW M240i tuning
The B58 Gen 1 in the F22 / F23 M240i is the same 3.0-litre single-turbo straight-six fitted to the M140i, 340i and 440i — same DME architecture, same hardware ceiling, same OBD flash path. BM3 is the most widely used platform on the B58 Gen 1; MHD covers Stage 1 through Stage 2+ cleanly; MG Flasher is the clean alternative for owners already in that ecosystem. Whichever platform you run, Samuel calibrates the same map — 420 bhp / 600 Nm at Stage 1, 450 bhp / 650 Nm at Stage 2, 480 bhp / 680 Nm at Stage 2+ with the B58 TU fuel pump. Every file hand-calibrated for the specific car, fuel grade and installed hardware — not a base map loaded and left.
Engine
B58 Gen 1
Stock
335 bhp · 500 Nm
Stage 3 ceiling
335 bhp
Configurator
Build your M240i tune
Choose your stage — Stage 1, Stage 2 or Stage 3 — add the options that fit your car, and send the full build to Samuel for a custom remote remap. He'll quote, schedule, and personally calibrate within 24 hours of confirmation.
Add a stage or add-on
£0
About this tune
The F22 / F23 M240i (2016–2018) is the LCI 2 Series coupe and convertible with the B58 Gen 1 — same engine and gearbox as the M140i in a slightly larger body, available as the F22 coupe and F23 convertible. Rear-wheel drive, ZF 8HP. Stock is 335 bhp / 500 Nm; the B58 Gen 1 hardware ceiling sits well above that and is shared across every Gen 1 chassis in the lineup. Samuel tunes both the coupe and convertible to the same standard — every file calibrated for the specific car, not the model family.
Compatibility
This M240i tune runs on Bootmod3, MHD or MG Flasher — all three flash the B58 Gen 1 over OBD. Compare platforms or see full B58 Gen 1 compatibility.
Engine guide
What the M240i map revision covers: B58 Gen 1 stages explained
The MG1CS003 or MEVD17 DME in the M240i supports the same flash path and tuning ceiling as every other B58 Gen 1 in the lineup. BM3 and MHD both give good data visibility on the B58 Gen 1 — useful at Stage 2 and above where the torque jump is meaningful. Stage 1 revises boost, ignition timing, fuel delivery and torque limits for 420 bhp / 600 Nm on stock hardware. Stage 2 recalibrates around downpipe (OPF delete if 2018+) and intake or panel filter, targeting 450 bhp / 650 Nm. Stage 2+ adds the B58 TU fuel pump for 480 bhp / 680 Nm. Every map is log-reviewed after the first flash before sign-off.
Stage 1
420 bhp · 600 Nm
No hardware required. The MG1CS003 / MEVD17 DME is flashed via the OBD port, boost, ignition timing, fuel delivery and torque limiters all revised. On the M240i the result is 420 bhp / 600 Nm (up from 335 / 500 stock). The single most cost-effective change available on the F22 / F23 platform, and the BMW M240i chip tuning starting point for nearly every owner who goes down the modification path.
Every M240i tune Samuel produces is calibrated individually for the specific car, fuel grade and installed hardware, not a base map loaded and left. BMW M240i tuning done correctly accounts for the F22 chassis behaviour, the 8HP gearbox calibration and UK fuel quality; the map is reviewed against your data logs after the first flash and revised before sign-off.
M240i specs & stage targets
BMW M240i tuning at a glance
- Engine
- B58 Gen 1
- Body styles
- F22 Coupe · F23 Convertible
- Chassis codes
- F22 / F23
- Production
- 2014–2021
- Drivetrain
- Rear-wheel drive
- Gearbox
- 8-speed ZF automatic
- Stock output
- 335 bhp · 500 Nm
- Tuning ceiling
- ~1000 bhp on the right hardware
| Stage | Target |
|---|---|
| Stage 1 | 420 bhp · 600 Nm |
| Stage 2 | 450 bhp · 650 Nm |
| Stage 2+ | 480 bhp · 680 Nm |
| Stage 3, Hybrid Turbo | 550-1000 bhp depending on spec |
| Stage 3, Big Turbo Kit | 550-1000 bhp depending on spec |
FAQ
M240i tuning — frequently asked questions
Stage 1 on the M240i targets 420 bhp / 600 Nm from the 335 bhp / 500 Nm factory baseline — 85 bhp and 100 Nm gained from the OEM B58 Gen 1 hardware, no parts required. The MG1CS003 or MEVD17 DME is flashed via the OBD port on BM3, MHD or MG Flasher.
This page covers the F22 Coupe and F23 Convertible (2016–2018) — both share the B58 Gen 1 engine and run the same core calibration. Every tune Samuel delivers is calibrated for the specific car, its fuel grade and installed hardware. The G42 M240i (B58 Gen 2) is a separate page.
A factory warranty can be voided if BMW attributes a specific failure to the tune — that is a personal call. Samuel's M240i maps are calibrated to stay within the mechanical limits of the B58 Gen 1 hardware, and the tune is fully reversible to stock before any dealer visit. Many owners run a tuned M240i without issue.
BM3 is the most widely used on the B58 Gen 1 and the best pick if you want realtime monitoring through the app. MHD covers Stage 1 through Stage 2+ cleanly and has a strong data-logging toolset. MG Flasher is the clean alternative for owners already in that ecosystem. The calibration Samuel delivers is the same on all three.
Yes. Once you've driven the M240i on the new map, send your data logs back through your platform and Samuel reviews them before sign-off. If anything needs adjusting, the file is revised — that review step is what separates this from a generic off-the-shelf map.
Keep exploring
Keep exploring M240i tuning
Other B58 Gen 1 models we tune: M140i, 340i, 440i.
Engine guide
B58 Gen 1 tuning
Every B58 Gen 1 BMW we calibrate, with the full Stage 1, 2 and 3 breakdown for the engine.
Learn moreStages
Stage 1 & Stage 2 explained
What separates Stage 1 from Stage 2 on the M240i, the real-world gains and the hardware each one needs.
Learn morePricing
How tuning is priced
How the licence, off-the-shelf maps and custom calibration are priced. We quote your exact spec, never a fixed menu.
Learn moreGuide
What is bootmod3?
New to remote flashing? A plain-English explainer on the platform and how a custom map reaches your car.
Learn more