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.
Engine
B58 Gen 1
Stock
335 bhp · 500 Nm
Stage 3 ceiling
335 bhp
About this tune
The F22 / F23 M240i (2016-2018) is the GT-flavoured coupe and convertible variant of the B58 Gen 1 platform, same engine and 8HP gearbox as the M140i in a slightly larger body. Stock is 335 bhp / 500 Nm. Available as the F22 coupe and F23 convertible. The F22 M240i is widely regarded as one of the best B58 Gen 1 chassis for daily-drivable Stage 2 builds, size and weight balance the torque better than the lighter M140i.
BMW M240i tuning
The BMW M240i (F22 / F23, 2014–2021) runs the B58 Gen 1 and leaves the factory at 335 bhp · 500 Nm, Rear-wheel drive, 8-speed ZF automatic. Samuel tunes the F22 Coupe and F23 Convertible to the same standard — every map hand-calibrated for the specific car, its fuel grade and its installed hardware, not a base file loaded and left. M240i Stage 1 alone takes it from 335 bhp · 500 Nm to 420 bhp · 600 Nm on the standard turbo, flashed over OBD on BM3, MHD or MG Flasher.
Add the Stage 2 hardware and the M240i targets 450 bhp · 650 Nm; from there the B58 Gen 1 stretches to around 1000 bhp on a hybrid or big-turbo build with supporting fuelling. Whichever stage suits the M240i, the file is delivered within 24 hours and is fully reversible to the supplied stock calibration.
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
Engine guide
BMW M240i tuning, stages, hardware and what to expect from the F22 B58 Gen 1
The M240i runs the B58 Gen 1, the same 3.0-litre single-turbocharged inline-six fitted to the M140i, 340i and 440i. From the factory, BMW left the F22 M240i calibrated to 335 bhp / 500 Nm; the hardware ceiling sits considerably higher. BMW M240i tuning with Samuel unlocks that headroom across the operating range, with a calibration matched to the F22 coupe or F23 convertible's weight balance and gearbox setup. Whether it's a BMW M240i F22 tuning project or the F23 cabrio, the calibration plan is identical.
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.
Compatibility
Platform and hardware compatibility
Bootmod3 (BM3)
Full B58 Gen 1 support across the MEVD17 (early) and MG1CS003 (later) DMEs. OBD-port flashing, realtime monitoring via the BM3 app. The most widely used platform for B58 Gen 1 tuning.
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MHD
Full B58 Gen 1 support. Suitable for Stage 1, Stage 2 and Stage 2+. Strong data-logging toolset and active community support.
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MG Flasher
Full B58 Gen 1 support. Clean interface and reliable flash process. Common alternative to BM3 for owners who prefer the MG ecosystem.
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xHP Flashtool
Compatible with the ZF 8HP gearbox fitted to every B58 Gen 1 chassis. Gearbox calibration matched to the ECU map, strongly recommended once torque jumps at Stage 2 and above. Available as an add-on.
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ECU: MEVD17 DME on early production cars; MG1CS003 DME on later production. Both accessible via OBD for Stage 1, Stage 2 and Stage 2+; bench-flash only required for some Stage 3 hybrid setups.
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
M240i Stage 1 lifts the B58 Gen 1 from a stock 335 bhp · 500 Nm to 420 bhp · 600 Nm, with no hardware required. The map is flashed through the OBD port on BM3, MHD or MG Flasher and is the starting point for almost every M240i owner — broader torque and sharper throttle response from the factory hardware.
This page covers the F22 Coupe and F23 Convertible (F22 / F23). They share the B58 Gen 1 engine and run the same core calibration, but every M240i tune Samuel delivers is tailored to your exact car, fuel grade and installed hardware — never a base map loaded and left.
Stage 2 on the M240i targets 450 bhp · 650 Nm and needs downpipe (OPF delete if 2018+) + intake or panel filter. Everything else — turbo, fuel system, intercooler — holds within the Stage 2 figures on the B58 Gen 1.
On the right hardware spec the B58 Gen 1 in the M240i reaches around 1000 bhp. Stage 1 and Stage 2 run the standard turbo; beyond that needs a hybrid or full big-turbo conversion with supporting fuelling, and the calibration is built bespoke per car.
Remotely. Once Samuel has your build details, the calibrated M240i map is delivered to your flashing tool account (BM3, MHD or MG Flasher) within 24 hours and you flash it yourself over OBD in about 15 minutes. It's fully reversible — the original B58 Gen 1 stock file is supplied before you flash, so the car can return to factory at any time.
A factory warranty can be voided if BMW shows a tune caused a specific failure, so it's a personal call. Samuel's M240i maps are calibrated to stay within the mechanical limits of the B58 Gen 1 hardware, and because the tune is reversible to stock before any dealer visit, many owners run a tuned M240i without issue.
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