Toyota Supra A90 / A91 B58 Tuning - Auckland

Professional ECU tuning for the Toyota GR Supra A90 / A91 powered by BMW's B58 3.0L turbo inline-6. MHD OTS flashing and custom dyno calibrations on our in-house Mainline dynamometer. Yes - it's a BMW engine, and we know it inside out.

Book Custom Tune Call 0800 276 968

Toyota Supra A90 / A91 Models We Tune

All powered by the B58B30 (Gen2) engine - see our B58 Engine Hub page for full engine details, technical specs, and common issues.

GR Supra A90 3.0T (340hp, pre-2020.5)

GR Supra A90 3.0T (382hp, 2020.5+)

GR Supra A91 Edition

GR Supra A91-CF Edition

GR Supra 2022+ Facelift (382hp)

🇳🇿 NZ / Australia Market Note: Turbo & Exhaust Manifold Differences

In New Zealand and Australia, the 2019 and 2020 Supra A90 models came with an integrated exhaust manifold (iEM) cylinder head and a 2-port turbo. From 2021 onwards, Toyota reverted to the standard 6-port turbo configuration used in other BMW B58 applications.

The 6-port turbo models (2021+) are generally more desirable for tuning as they can make more power and offer better compatibility with aftermarket turbo upgrades. If you're buying a Supra for tuning potential, the 2021+ models have the edge.

Toyota Supra A90 / A91 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 Power340–382 hp / 500 nm

Stage 1 (Software Only)420–430 hp / 575–580 nm

Stage 2 (ECU + Bolt-Ons)460–500 hp / 650–680 nm

Maximum Potential550–700+ hp (upgraded turbo)

For full tuning stage breakdowns, hardware requirements, and common engine issues, see our comprehensive B58 Engine Hub page.

Why the Toyota Supra A90 / A91?

The A90 Supra uses the exact same B58 Gen2 engine as the M340i - all BMW MHD tuning applies
At ~1,500kg it's significantly lighter than any BMW B58 application - the same tune feels dramatically faster
Toyota's ZF 8HP is the same unit as BMW's - xHP transmission tuning works identically

Look Up Your Tuning Potential

Use our Performance Finder to search your specific model and see expected power gains for every tuning stage.

→ Open Performance Finder

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 B58 License~$993

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 Supra)$769

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

⚠️ ECU Unlocks (If Required)

Some vehicles require an ECU unlock before tuning can proceed.

Bench Unlock (ECU locked by dealer update)$575 incl. GST

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

Supra A90 models with a production date of June 2020 or later require a FEMTO unlock ($2,800) before the ECU can be flashed.

If your Supra has had a Toyota dealer software update, the ECU may be locked. A bench unlock ($575 incl. GST) is required before any tuning can proceed.

Stage 3 & Stage 4 - Full Build Programme

Stage 3 (800+whp): Upgraded turbo, ethanol fuel system, supporting modifications, custom calibration.

Stage 4 (1,300+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.

Toyota Supra A90 / A91 Tuning FAQs

How much power can a tuned Supra A90 make?

With EuroLab's MHD custom dyno tune, the Supra A90 3.0T typically makes 420–430hp at Stage 1 (software only). Stage 2 with bolt-ons pushes to 460–500hp. Stage 3 with an upgraded turbo and ethanol reaches 800+whp. Our most extreme Supra build made 818whp. All figures SAE J1349-corrected on our Mainline CCS3600 hub dyno.

How much does it cost to tune a Supra A90 in Auckland?

MHD OTS (self-flash at home) is ~$993 for the B58 license plus $189 for the WiFi adapter. EuroLab's MHD custom dyno tune is $2,500 incl. GST. xHP transmission tune (OTS) is $769. If your ECU is locked from a Toyota dealer software update, a bench unlock is $575 incl. GST. Supras produced June 2020+ also require a FEMTO unlock ($2,800).

Does my Supra need a bench unlock or FEMTO unlock?

Two different things: (1) If Toyota has performed a dealer software update, your ECU may be locked - a bench unlock ($575 incl. GST) is needed to restore flash capability. (2) If your Supra was produced June 2020 or later, the newer DME hardware requires a FEMTO unlock ($2,800) before MHD can flash. Some cars need both.

Is the Supra A90 really a BMW?

The engine and transmission are 100% BMW - the B58B30 3.0L turbo inline-6 and ZF 8HP. This is identical to the engine in the M340i, Z4 M40i, and other BMW models. All BMW-specific tuning tools (MHD, xHP) work on the Supra. The chassis, body, and interior are Toyota/BMW co-developed.

What's the difference between A90 and A91 Supra?

The A91 is a special edition trim package, not a different chassis. Toyota released A91 Edition and A91-CF Edition models with cosmetic upgrades. Mechanically they're identical to the standard A90 3.0T - same B58 engine, same tuning potential. The 2022+ facelift models received a power bump to 382hp.

Can I get Stage 3 or Stage 4 for my Supra?

Yes. Stage 3 (800+whp) involves an upgraded turbo, ethanol fuel system, and supporting mods. Stage 4 (1,300+whp) requires EuroLab's complete engine and transmission build programme - forged internals, built trans, custom everything. Stage 3 and Stage 4 are enquire-only as each build is fully custom.

B58 Engine Hub - Full B58B30 (Gen2) engine details, specs, common issues & tuning guide
ECU Tuning Auckland - Our full ECU tuning service page
BMW Service Auckland - Full BMW servicing, diagnostics & repair
MHD Tuning Products - MHD licences, WIFI adapters & custom tunes
EuroLab Performance Parts Store - 6,000+ parts from Akrapovic, VRSF, Eventuri & more