BMW M5 F90 / M8 S63 V8 Tuning — Auckland

Professional ECU tuning for the BMW M5 F90 and M8 F9x powered by the S63 4.4L twin-turbo V8. Custom dyno calibrations on our in-house Mainline dynamometer. BMW's flagship performance — genuine supercar power from a tune.

Book Custom Tune Call 0800 276 968

Dyno ProvenReal Results

In-HouseMainline Hub Dyno

SAE J1349Corrected Figures

6,000+Parts In Stock

BMW M5 F90 / M8 Models We Tune

All powered by the S63B44 (F9x Gen) engine — see our S63 Engine Hub page for full engine details, technical specs, and common issues.

M5 F90 Sedan (600hp)

M5 F90 Competition (625hp)

M5 CS F90 (635hp)

M8 F91 Convertible (600hp)

M8 F92 Coupé (600hp)

M8 F93 Gran Coupé (600hp)

M8 Competition (625hp)

BMW M5 F90 / M8 Tuning Power Figures

All figures are approximate, SAE J1349-corrected on our Mainline hub dynamometer. EuroLab develops its own proprietary tune files — calibrated for NZ 98 RON fuel and local conditions.

Power at a Glance

Stock Power600 hp (Standard) — 635 hp (M5 CS)

Stage 1 (Software Only)700–720 hp / 850–900 nm

Stage 2 (ECU + Bolt-Ons)740–780 hp / 900–950 nm

Maximum Potential900–1000+ hp (upgraded turbos)

For full tuning stage breakdowns, hardware requirements, and common engine issues, see our comprehensive S63 Engine Hub page.

Why the BMW M5 F90 / M8?

A Stage 1 M5/M8 produces over 700hp — putting it in Lamborghini Aventador territory
AWD makes the M5 F90 one of the most usable 700hp cars on the road
The M8 Competition is BMW's ultimate grand tourer — a tune transforms it into a supercar killer

Look Up Your Tuning Potential

Select your vehicle to see expected power gains

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Model Family

Generation / Year

Engine

Power figures are estimates based on available tuning data. Actual results are validated on our in-house Mainline CCS3600 hub dynamometer and may vary based on fuel quality, ambient conditions, and individual engine health.

Tuning Pricing

Transparent pricing for all tuning options. All prices in NZD.

MHD OTS — DIY Self-Flash

Flash pre-built maps to your ECU at home using the MHD app + WiFi adapter

MHD WiFi Adapter$189

MHD S63 License~$1,331

MHD Custom Dyno Tune — At EuroLab

Professional custom calibration on our Mainline CCS3600 hub dynamometer. We develop the tune file in-house — MHD is the flashing platform.

Custom Dyno Tune$2,500 incl. GST

Includes baseline dyno run, custom calibration for your specific car, and final validation pulls. Calibrated for NZ 98 RON fuel and local conditions.

xHP Transmission Tune

Transform your automatic transmission with faster shifts, raised torque limiters, and improved gear holding.

xHP Trans OTS (8-Speed G Chassis)$769

xHP Trans Custom (8-Speed G Chassis)$1,769

⚠️ ECU Unlocks (If Required)

Some vehicles require an ECU unlock before tuning can proceed.

FEMTO Unlock (June 2020+ production)$2,800

Newer F90 M5 and F9x M8 models with a production date of June 2020 or later may require a FEMTO unlock before MHD flashing.

Stage 3 & Stage 4 — Full Build Programme

Stage 3 (850+whp): Upgraded turbo, ethanol fuel system, supporting modifications, custom calibration.

Stage 4 (1,200+whp): EuroLab’s complete engine and transmission build programme — forged internals, built trans, custom everything.

Call 0800 276 968 or enquire online for a custom quote.

How It Works — Our Tuning Process

Every EuroLab custom tune follows the same rigorous 4-step process.

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1. Consultation & Health Check

We inspect your vehicle, check for fault codes, and discuss your goals. No tuning happens on a car with underlying issues.

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2. Baseline Dyno Run

Your car goes on our Mainline CCS3600 hub dynamometer for baseline power and torque measurements — SAE J1349-corrected for honest, repeatable numbers.

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3. Custom Calibration

We develop your tune file in-house, making iterative adjustments on the dyno. Fuel maps, boost targets, ignition timing — all calibrated for your specific car, mods, and NZ 98 RON fuel.

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4. Final Validation & Handover

Final power pulls to confirm gains, data review with you, and a road test. You leave with your dyno sheet and a car that performs exactly as promised.

Why Choose EuroLab?

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In-House Mainline Hub Dyno

SAE J1349-corrected figures on our Mainline CCS3600 — the most conservative standard. Our numbers are real, repeatable, and honest.

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Custom Calibrations In-House

We develop our own proprietary tune files, calibrated live on the hub dyno for NZ 98 RON fuel. We use MHD as the flashing platform — the tune itself is ours.

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Full Workshop

We don’t just flash ECUs. Diagnostics, repairs, bolt-on installs, turbo swaps — everything under one roof at our East Tamaki workshop.

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149+ Five-Star Reviews

4.8-star Google rating. Our reputation is built on quality work, honest advice, and cars that perform exactly as promised.

BMW M5 F90 / M8 Tuning FAQs

How much power does a tuned M5 F90 make?

With EuroLab’s MHD custom dyno tune, the M5 F90 Competition (625hp stock) typically makes 700–720hp at Stage 1. The M5 CS (635hp) reaches similar numbers. Stage 2 pushes to 740–780hp. All figures SAE J1349-corrected on our Mainline CCS3600 hub dynamometer.

How much does it cost to tune an M5 or M8 in Auckland?

MHD OTS (self-flash) is ~$1,331 for the S63 license plus $189 for the WiFi adapter. EuroLab’s MHD custom dyno tune is $2,500 incl. GST. xHP transmission tune (OTS) from $769. FEMTO unlock ($2,800) may be required for models produced June 2020+.

Do I need a FEMTO unlock for my M5 F90?

If your M5 F90 or M8 has a production date of June 2020 or later, a FEMTO unlock ($2,800) may be required before MHD can flash the ECU. Earlier production models are not affected. Check your production date on the B-pillar sticker.

Is a 700hp M5 reliable for daily driving?

The S63 V8 is a proven engine in BMW’s M division fleet. Stage 1 power levels (700hp) are well within the engine’s design tolerances. The AWD system handles the power effortlessly. With proper servicing and quality oil, a Stage 1 M5 is a very reliable daily driver.

What makes the M5 CS different from the Competition?

The M5 CS adds 10hp (635 vs 625hp), drops 70kg of weight (carbon fibre panels, lighter wheels), and has a more aggressive suspension setup. For tuning purposes, both reach the same Stage 1 numbers. The CS is the collector’s M5.

Can the M5 or M8 reach 1,000hp?

Yes. With upgraded turbos and supporting modifications, the S63 V8 has been proven beyond 1,000hp. Stage 3 (900+hp) involves turbo upgrades and ethanol fuel system. These are enquire-only custom builds — contact us for a consultation.

Ready to Tune Your BMW M5 F90 / M8?

Book your tuning consultation today. Stage 1 daily driver or full-build custom calibration — we’ve got you covered.