Tuning · BMW M4 GTS (F82)
M4 GTS
S55
The GTS, the F82 M4 stripped, caged and water-injected from the factory. Hand-calibrated from Stage 1 to a fully bespoke big-turbo build, with the WMI hardware already on the car.
Engine
S55
Stock
493 bhp · 600 Nm (water injection)
Stage 3 ceiling
493 bhp
About this tune
The F82 M4 GTS (2016) is BMW M's most extreme F-platform car, a stripped, roll-caged, lightweight F82 M4 with factory water/methanol injection (WMI) cooling the intake charge enough to run 493 bhp / 600 Nm from the S55 at factory. Coupe only, M-DCT only, limited production. The WMI hardware is fitted from new, and remains in place through Stage 1 / Stage 2 tuning, giving the GTS a uniquely capable platform for aggressive ignition timing on the stock turbos.
BMW M4 GTS tuning
The F82 M4 GTS (2016) is the most extreme F-platform M car — lightweight, roll-caged, and factory water/methanol injection on the S55. The WMI hardware stays in place through Stage 1 and Stage 2; Samuel's calibration takes advantage of the cooling effect to extract the next increment of timing and torque. Stage 1 targets 520 bhp / 700 Nm from the 493 bhp / 600 Nm factory baseline — the gain in peak power is modest (the GTS already started high), but the mid-range torque linearity and throttle response improvement are more pronounced. Stage 2 adds downpipes, midpipe and intakes for 560 bhp / 750 Nm. Add Flex Fuel at Stage 2 for up to 600 bhp on E40 blends. Every file hand-calibrated for the specific GTS, its fuel grade and WMI calibration.
The F82 M4 GTS (2016) is BMW M's limited-production send-off for the F82 generation — stripped interior, roll cage, OHLINS suspension, factory WMI cooling the S55's intake charge. Coupe only, rear-wheel drive only, M-DCT only. The WMI hardware is factory-integrated and calibrated as part of the standard tune; Samuel's calibration extends that same integration into the remapped map. xHP gearbox calibration is available as an add-on for the 7-speed M-DCT, matched to the revised ECU output.
Configurator
Build your M4 GTS 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
What the M4 GTS map revision covers: S55 stages explained
The M4 GTS is the most capable factory S55 chassis from a timing headroom standpoint — the WMI cooling effect means BMW already extracted more boost and timing than the standard M4 at the factory. Stage 1 on the GTS targets 520 bhp / 700 Nm; the gain over stock is narrower in peak bhp terms but broader in mid-range delivery and rev-range linearity. Stage 2 adds downpipes, midpipe and intakes for 560 bhp / 750 Nm. Add Flex Fuel at Stage 2 for up to 600 bhp on E40 blends — the WMI and fuel blend work together to keep intake temperatures lower than on a standard S55 car at equivalent power. Every map is log-reviewed after the first flash before sign-off.
Stage 1
520 bhp · 700 Nm
No hardware required, the factory WMI system stays in place. The MEVD17 DME is flashed via the OBD port. BMW M4 GTS Stage 1 unlocks 520 bhp and 700 Nm from the OEM hardware (the gain over the 493 bhp stock is smaller than on the standard M4 because BMW already pushed the GTS hard at factory; the headroom released here is in throttle response, mid-range torque and rev-range linearity rather than peak number).
Every M4 GTS tune Samuel produces is calibrated individually for the specific car, fuel grade and installed hardware, not a base map loaded and left. BMW M4 GTS tuning done correctly accounts for the WMI hardware integration, the M-DCT calibration, the S55's rod-bearing condition and UK fuel quality; the map is reviewed against your data logs after the first flash and revised before sign-off.
Compatibility
This M4 GTS tune runs on Bootmod3, MHD or MG Flasher — all three flash the S55 over OBD. Compare platforms or see full S55 compatibility.
M4 GTS specs & stage targets
BMW M4 GTS tuning at a glance
- Engine
- S55
- Body styles
- F82 Coupe
- Chassis codes
- F82
- Production
- 2014–2020
- Drivetrain
- Rear-wheel drive
- Gearbox
- 7-speed DCT
- Stock output
- 493 bhp · 600 Nm (water injection)
- Tuning ceiling
- ~1200 bhp on the right hardware
| Stage | Target |
|---|---|
| Stage 1 | 520 bhp · 700 Nm |
| Stage 2 | 560 bhp · 750 Nm |
| Stage 3, Hybrid Turbo | 600-1200 bhp depending on spec |
| Stage 3, Big Turbo Kit | 600-1200 bhp depending on spec |
FAQ
M4 GTS tuning — frequently asked questions
Stage 1 on the M4 GTS targets 520 bhp / 700 Nm from the 493 bhp / 600 Nm factory baseline. The absolute power gain is narrower than on a standard M4 Stage 1 because the GTS already starts from a more aggressive factory tune; the improvement is more pronounced in mid-range torque linearity and throttle response. No hardware required — the MEVD17 DME is flashed via OBD.
This page covers the F82 M4 GTS (2016) — S55 engine with factory WMI, F82 coupe body, M-DCT only. Every tune Samuel delivers is calibrated for the specific car, its fuel grade and WMI hardware spec — never a base map loaded and left.
Stage 2 on the M4 GTS targets 560 bhp / 750 Nm and needs downpipes + midpipe + intakes. The stock S55 turbos hold within the Stage 2 figures; the factory WMI system stays in place and continues to provide intake cooling at Stage 2 power levels.
The S55 in the M4 GTS reaches around 1200 bhp on the right hardware spec. Stage 1 and Stage 2 run the stock turbos; beyond that needs a hybrid or full big-turbo conversion with supporting fuelling, built bespoke per car.
Yes — xHP gearbox calibration is available as an add-on for the 7-speed M-DCT fitted to the M4 GTS. It delivers firmer, faster shifts, raised torque limits and launch control logic matched to the ECU map. Strongly recommended at Stage 2 and above.
Keep exploring
Keep exploring M4 GTS tuning
Other S55 models we tune: M3 (F80), M3 CS, M4 (F82), M4 CS, M2 Competition.
Engine guide
S55 tuning
Every S55 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 M4 GTS, 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