Tuning · BMW M8 (F91 / F92 / F93)
M8 (F92)
S63
The S63 V8 in M8 coupe, convertible, and Gran Coupe form, the GT flagship, 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 M8 (F91 / F92 / F93) tuning
The S63 twin-scroll twin-turbo V8 in the F91 / F92 / F93 M8 runs the MG1CS003 DME — newer and more capable than the MEVD17.2.G in the F-series M6, supporting BM3, MHD and MG Flasher across all three body variants. Stock 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 dual-ECU architecture still applies: both control units require a one-time unlock before any map can be written. Every map hand-calibrated for the specific car — convertible, coupe or Gran Coupe — on the platform of your choice.
Engine
S63
Stock
617 bhp · 750 Nm (Competition)
Stage 3 ceiling
617 bhp
Configurator
Build your M8 (F92) 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 BMW M8 (F91 / F92 / F93) (F91 / F92 / F93, 2019–present) 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 F92 Coupe, F91 Convertible and F93 Gran Coupe 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. M8 (F92) 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 M8 (F92) 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 M8 (F92), the file is delivered within 24 hours and is fully reversible to the supplied stock calibration.
Compatibility
This M8 (F92) tune runs on Bootmod3, MHD or MG Flasher — all three flash the S63 over OBD. Compare platforms or see full S63 compatibility.
Engine guide
BMW M8 (F92) tuning, stages, hardware and what to expect from the second-gen S63
The F91 / F92 / F93 M8 runs the second-generation S63, same revised 4.4-litre twin-turbo V8 as the F90 M5, with the full Competition spec from the factory. Stock figures: 617 bhp / 750 Nm. BMW M8 F92 tuning with Samuel takes the M8 into the same Stage 1 / Stage 2 territory as the F90 M5 with which it shares its engine, DME and gearbox. BMW M8 Coupe tuning (F92), M8 Convertible tuning (F91) and M8 Gran Coupe tuning (F93) all use the same map.
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 M8 F92 Stage 1 unlocks 680 bhp / 850 Nm from the OEM hardware (up from 617 / 750 stock). The single most cost-effective change available on the F92 M8, and the BMW M8 chip tuning starting point for nearly every owner.
Every M8 tune Samuel produces is calibrated individually for the specific car, fuel grade and installed hardware, not a base map loaded and left. BMW M8 tuning done correctly accounts for the F91/F92/F93 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.
M8 (F92) specs & stage targets
BMW M8 (F91 / F92 / F93) tuning at a glance
- Engine
- S63 · 4.4L twin-turbo V8
- Body styles
- F92 Coupe · F91 Convertible · F93 Gran Coupe
- Chassis codes
- F91 / F92 / F93
- Production
- 2019–present
- 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
M8 (F92) tuning — frequently asked questions
The engine package is: F91, F92 and F93 all use the same second-generation S63 and DME setup, so every stage on this page applies to all three. Each customer's file is still produced individually, because fuel, region and fitted hardware differ from car to car even within one body style.
Two things: downpipes and upgraded intakes. With those fitted the standard turbos support 750 bhp and 900 Nm, up from the Stage 1 figure of 680 bhp and 850 Nm. Everything else, turbochargers, intercooling and fuelling, remains factory at this level, and Samuel confirms the exact setup with you before writing the file.
On the right hardware, yes. The second-generation S63 supports 1,000-plus bhp with hybrid or full-frame turbos and supporting fuelling behind them. That figure is spec-dependent rather than guaranteed, which is why big builds are calibrated bespoke: send the complete parts list and Samuel maps the M8 around exactly what is fitted.
Not special, but the best you can reliably get. The headline stage figures assume high-octane super unleaded, and the map is calibrated to the fuel you tell Samuel you use. Consistently running a different grade than the file expects is the one thing to avoid, so be accurate when ordering.
Less than most expect. Your calibrated file appears in your BM3, MHD or MG Flasher account within 24 hours of Samuel receiving your build details, and flashing it is a guided, on-screen process through the OBD port. The stock M8 calibration stays saved throughout, so there is always a way back.
Keep exploring
Keep exploring M8 (F92) tuning
Other S63 models we tune: M5 (F10), M5 (F90), M6 (F1x), 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 M8 (F92), 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 M8 (F92) ECUs ship locked from the factory and need unlocking before any tune. Here is how it works.
Learn more