Tuning · BMW M5 (F90)
M5 (F90)
S63
The S63 V8 in the F90 M5, the all-wheel-drive super-saloon, 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
S63
Stock
617 bhp · 750 Nm (Competition)
Stage 3 ceiling
617 bhp
BMW M5 (F90) tuning
The S63 twin-scroll twin-turbo V8 in the F90 M5 and M5 Competition runs a dual-ECU architecture — two control units managing the V8, both requiring unlock before either can be flashed. This is not a standard OBD remap job: the unlock process is specific to this car and is handled as part of the build setup. Stock output on the Competition is 617 bhp / 750 Nm. Stage 1 targets 680 bhp / 850 Nm from OEM hardware; Stage 2 adds downpipes, midpipe and intakes for 750 bhp / 900 Nm. The BM3 licence for the F90 is £665 — not the standard £445, the dual-ECU architecture carries a higher licence cost. Every map hand-calibrated for the specific car; BM3 is the only supported platform on the F90 M5.
The BMW M5 (F90) (F90, 2018–2023) runs the S63 4.4L twin-turbo V8 and leaves the factory at 617 bhp · 750 Nm (Competition), M xDrive, 8-speed M Steptronic. Samuel tunes the F90 Saloon 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. M5 (F90) Stage 1 alone takes it from 617 bhp · 750 Nm (Competition) to 680 bhp · 850 Nm on the standard turbo, flashed over OBD on BM3, MHD or MG Flasher.
Add the Stage 2 hardware and the M5 (F90) targets 750 bhp · 900 Nm; from there the S63 stretches to around 1000 bhp on a hybrid or big-turbo build with supporting fuelling. Whichever stage suits the M5 (F90), the file is delivered within 24 hours and is fully reversible to the supplied stock calibration.
Configurator
Build your M5 (F90) 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 M5 F90 tuning, stages, hardware and what to expect from the second-gen S63
The F90 M5 runs the second-generation S63, BMW M's revised 4.4-litre twin-turbocharged V8 with twin-scroll housings, updated turbos and direct injection. Standard F90 M5 ships at 600 bhp; Competition trim at 617 bhp / 750 Nm. BMW M5 F90 tuning with Samuel takes the M5 Competition past 680 bhp on Stage 1 alone, comfortably ahead of the F90 CS spec. The xDrive layout adds no complications to the flash process; the same map runs on every drivetrain config the F90 ships in.
Stage 1
680 bhp · 850 Nm
No hardware required. The MG1CS003 DME is flashed via the OBD port, boost pressure, ignition timing, fuel delivery and torque limiters all revised. BMW M5 F90 Stage 1 unlocks 680 bhp / 850 Nm from the OEM hardware (up from 600-617 / 750 stock). The BMW M5 F90 chip tuning starting point for nearly every owner, and the cleanest single change available on the platform.
Every M5 F90 tune Samuel produces is calibrated individually for the specific car, fuel grade and installed hardware, not a base map loaded and left. BMW M5 F90 tuning done correctly accounts for the F90 chassis behaviour, the 8HP gearbox calibration, the xDrive logic and UK fuel quality; the map is reviewed against your data logs after the first flash and revised before sign-off.
Compatibility
This M5 (F90) tune runs on Bootmod3, MHD or MG Flasher — all three flash the S63 over OBD. Compare platforms or see full S63 compatibility.
M5 (F90) specs & stage targets
BMW M5 (F90) tuning at a glance
- Engine
- S63 · 4.4L twin-turbo V8
- Body styles
- F90 Saloon
- Chassis codes
- F90
- Production
- 2018–2023
- Drivetrain
- M xDrive
- Gearbox
- 8-speed M Steptronic
- Stock output
- 617 bhp · 750 Nm (Competition)
- Tuning ceiling
- ~1000 bhp on the right hardware
| Stage | Target |
|---|---|
| Stage 1 | 680 bhp · 850 Nm |
| Stage 2 | 750 bhp · 900 Nm |
| Stage 3, Hybrid Turbo | 1000+ bhp depending on spec |
| Stage 3, Big Turbo Kit | 1000+ bhp depending on spec |
FAQ
M5 (F90) tuning — frequently asked questions
Far more usable than in the rear-driven M5s that came before. Four driven wheels let the F90 deploy 850 Nm of Stage 1 torque in conditions that would have an F10 fighting for grip, which is why the tuned F90 works as a genuine all-year daily rather than a fair-weather toy.
Stage 1 takes the second-generation S63 from its factory 617 bhp and 750 Nm to 680 bhp and 850 Nm with no hardware changes at all. It is delivered as a file for BM3, MHD or MG Flasher and written specifically for your car; the throttle sharpens and the torque plateau widens noticeably across the range.
F90-era cars ship with locked DMEs, and because the V8 uses two of them, both are unlocked before your first map goes on. It only ever happens once. From then on the M5 reads and writes calibrations over OBD like any earlier car, whether it is running a tuned file or the stock one.
No, the packages here are engine calibrations, and the gearbox keeps its factory software. Samuel builds the torque curve with the transmission in mind so shifts stay crisp under higher load, and the standard M Steptronic is well matched to the Stage 1 and Stage 2 outputs as delivered.
Honestly: a BMW dealer can reject a warranty claim if they attribute a failure to tuning, so it is a judgement each owner makes. What Samuel controls is the calibration itself, which stays inside sensible mechanical margins, and the tune can be flashed back to the retained stock file before any dealership visit.
Keep exploring
Keep exploring M5 (F90) tuning
Other S63 models we tune: M5 (F10), M6 (F1x), M8 (F92), X5M (F15), X6M (F16), X5M (F95).
Engine guide
S63 tuning
Every S63 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 M5 (F90), 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 moreBefore you flash
ECU unlock guide
Newer M5 (F90) ECUs ship locked from the factory and need unlocking before any tune. Here is how it works.
Learn more