mbFAST Tuning — Japan

Remote ECU Tuning — Worldwide

Custom calibrations from Japan’s afterfire specialists — read, tuned and flashed in your own garage with the AutoTuner AT One.

Start Your Remote Tune

What Is Remote Tuning?

You don’t need to bring your car to Shibuya. The AutoTuner AT One is a compact OBD-II flasher that puts our workshop in your pocket: it reads your ECU, sends the data to us, and writes our finished calibration back to your car — anywhere in the world. The process is guided step by step inside the app, and our team stays connected with you through built-in chat.

How It Works

01

Compatibility Check

Send us your model, VIN and ECU software version through the contact form. We confirm AT One support for your exact vehicle before anything ships.

02

We Ship Your AT One

Your device arrives activated and linked to your vehicle’s VIN. One-time hardware — no subscription, no recurring fees.

03

Plug In & Pair

Scan the QR code, install the MyFlasher app (iOS / Android) and connect the AT One to your OBD-II port. No laptop needed.

04

Read Your ECU

The app reads your stock calibration and uploads it automatically to our cloud. Your original file is archived from day one — full restore is always possible.

05

We Build Your Calibration

Afterfire / pops & bangs, Stage 1 power, or both — developed on data proven across Japan’s exotic and JDM scene.

06

Flash At Home

Your file is delivered in-app. Write it in your own driveway, with in-app chat and datalogging support from our engineers.

What You Can Order Remotely

Pops & Bangs / Afterfire

Our signature. Crackles and flames tuned to your taste — see the full breakdown on our pops & bangs page.

Stage 1 Power

Reworked torque, boost and throttle response on stock hardware — calibrated conservatively for street reliability.

Power + Afterfire Combo

Both in one file. The most popular remote package for exotic and hot-hatch owners alike.

TCU (gearbox) remote support is currently limited to selected platforms — contact us to confirm your vehicle.

Why mbFAST

Over 1,000 vehicles calibrated across Japan’s exotic and JDM scene, supported by a nationwide partner network. We specialise in the sound side of tuning that most remote tuners treat as an afterthought — from Lamborghini V12s (see our Aventador afterfire hub) to turbocharged four-cylinders. Your stock file is always retained, and every calibration is written by us — not resold from a generic file service.

FAQ

Which vehicles are supported?

Coverage depends on model, engine and ECU software version. Send your details via the contact form and we confirm compatibility before you order.

Can you tune my gearbox (TCU) remotely?

TCU (gearbox) remote support is currently limited to selected platforms — contact us to confirm your vehicle.

Is there any subscription?

No. The AT One is a one-time purchase. Calibration work is quoted per job.

Can I return to stock?

Yes. Your original calibration is retained on our side and can be flashed back at any time.

Ready When You Are

Tell us your model, VIN and goals — we’ll confirm compatibility and quote your package.

Start Your Remote Tune