Tuning · BMW M8 (F91 / F92 / F93) (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.
Engine
S63
Stock
617 bhp · 750 Nm (Competition)
Stage 3 ceiling
617 bhp
BMW M8 (F91 / F92 / F93) tuning
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.
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
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.
Compatibility
Platform and hardware compatibility
Bootmod3 (BM3)
Full S63 support across every chassis in the family (M5 F10, M5 F90, M6 F1x, M8, X5 M, X6 M). MEVD17 and MG1 DME OBD flashing, realtime monitoring via the BM3 app. The most widely used platform for S63 tuning.
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MHD
Full S63 support across the M5 F10 / F90, M6, M8 and X5 M / X6 M platforms. Suitable for Stage 1 and Stage 2. Strong data-logging toolset for verifying air/fuel, ignition and oil temperature on a sustained pull.
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MG Flasher
Full S63 support. Clean interface and reliable flash process, a common choice for F90 M5 and M8 owners running the MG1 DME.
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xHP Flashtool
Compatible with the ZF 8HP gearbox fitted to every S63 chassis. Strongly recommended at Stage 2 where torque jumps to 900 Nm, the OEM shift logic isn't calibrated for that delivery. Available as an add-on.
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ECU: MEVD17.2.G (F10 / F1x), MG1CS003 (F90 M5 onwards). Accessible via the OBD port, no bench flash required for Stage 1 or Stage 2.
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
M8 (F92) Stage 1 lifts the S63 from a stock 617 bhp · 750 Nm (Competition) to 680 bhp · 850 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 M8 (F92) owner — broader torque and sharper throttle response from the factory hardware.
This page covers the F92 Coupe, F91 Convertible and F93 Gran Coupe (F91 / F92 / F93). They share the S63 4.4L twin-turbo V8 and run the same core calibration, but every M8 (F92) 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 M8 (F92) targets 750 bhp · 900 Nm and needs downpipes + intakes. Everything else — turbo, fuel system, intercooler — holds within the Stage 2 figures on the S63.
On the right hardware spec the S63 in the M8 (F92) 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.
Yes — later M8 (F92) (F91 / F92 / F93) cars ship with a locked DME that must be unlocked once before any map can be written. It's a one-time step; after that the M8 (F92) flashes normally over OBD and the tune is fully reversible to the supplied stock file.
Remotely. Once Samuel has your build details, the calibrated M8 (F92) 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 S63 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 M8 (F92) maps are calibrated to stay within the mechanical limits of the S63 hardware, and because the tune is reversible to stock before any dealer visit, many owners run a tuned M8 (F92) without issue.
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