Autotuner One Personal ECU and TCU Tuning Device
Autotuner One is a personal-use ECU and TCU tuning device that makes professional vehicle remapping more accessible from home. There is no workshop visit, no laptop and no complicated setup required.
Designed for non-professional users, Autotuner One connects directly to your vehicle through the OBD port and is operated using the official Autotuner app, available for iOS and Android devices.
Paramount Performance works closely with our sister company VIEZU Technology to provide you with powerful ecu remap, for your DIY tuning device purchased from us.
The app guides you through the process of reading your vehicle software, securely sending it to VIEZU’s tuning team, and downloading your custom tuning file once it is ready.
You get access to the same high-quality remap service used by our sister company’s, VIEZU, global network of tuners, now available in a simple home tuning format. With built-in file security, ECU identification and checksum validation, Autotuner One gives you a safer and more structured way to manage your vehicle remap from home.
Whether you are looking for sharper response, increased torque, improved drivability or better fuel efficiency, Autotuner One gives you direct control over your vehicle tuning, with support from our expert team throughout the process.
VAG ECU and TCU Tuning with Autotuner One
Autotuner One supports selected VAG gearbox tuning applications, allowing compatible Audi, Volkswagen, SEAT, Skoda, Cupra and Porsche owners to tune both the engine ECU and gearbox TCU using the same personal tuning device.
ECU tuning can help improve power, torque and throttle response, while TCU tuning helps the gearbox make better use of the extra performance. For many VAG vehicles, combining ECU and TCU tuning can deliver a more complete driving improvement than engine tuning alone.
Supported VAG gearbox families currently include DQ200, DQ250, DQ381, DQ500, DL382 and DL501. Compatibility depends on the exact vehicle, gearbox, ECU and software version, so please contact VIEZU before ordering.
Key Features
- Fully app-based remapping device, with no laptop required
- Connects through your vehicle’s OBD port
- ECU tuning for compatible petrol and diesel vehicles
- Selected TCU tuning now available for supported VAG models
- Secure cloud upload and download of tuning files
- Custom tuning files written by VIEZU’s in-house calibration specialists
- Ability to use multiple tuning file options where available
- Includes original file backup and restore functions
- Built-in ECU and TCU identification features, where supported
- Simple step-by-step interface for safe use at home
Compatible Vehicle Makes Include
Audi, BMW, Citroen, Dacia, Fiat, Ford, Jaguar, Land Rover, Mercedes-Benz, Mini, Nissan, Opel/Vauxhall, Peugeot, Porsche, Renault, SEAT, Skoda, Toyota, Volkswagen, Volvo and more.
TCU Compatibility
Selected TCU tuning is available for supported VAG applications, including certain Audi, Volkswagen, SEAT, Skoda, Cupra and Porsche models.
VAG TCU support currently includes selected DQ200, DQ250, DQ381, DQ500, DL382 and DL501 gearbox applications. The supported vehicle list may change over time, so compatibility must be checked before purchase.
Whether you are a keen enthusiast or simply want more from your everyday car, Autotuner One lets you manage your vehicle’s performance safely and conveniently from your smartphone.
Please Check Before Purchase
Compatibility depends on your vehicle’s make, model, engine, gearbox, ECU and software version. Please contact our team before ordering so we can confirm support for your specific vehicle.
Choose Your Tuning Files
Autotuner One can be used with multiple tuning file options where available, including your original file and selected VIEZU tuning calibrations.
This gives you the flexibility to return the vehicle to standard, load an ECU tune, apply a supported TCU tune, or choose from available tuning options using the Autotuner app, without needing to visit a professional tuner. You can do it all from your own driveway.
- CLASSICME – A useful reset facility that allows you to return the vehicle to its original factory settings whenever needed.
- ECOME – GET MORE MILES WITH LESS FUEL* Up to 20% fuel saving is achievable (*available on diesel engines only). Viezu’s Award-Winning BlueOptimize Fuel Saving Technology is installed on some of the UK’s largest fleets. Now it is available to you.
- FUSIONME – BEST OF ALL WORLDS. Designed to help deliver more miles with less fuel, along with increased bhp. This DRIVE Setting is only available for diesel or diesel hybrid engines.
- EXCITEME – A performance-focused DRIVE Setting designed to help unlock the full potential of your motor. Bhp and torque are upgraded, helping to deliver a smoother, stronger and more responsive drive.
- THRILLME – PURE ADRENALINE. A fun DRIVE Setting intended for track day drivers. It is not for everyday road use and, if you are taking your car onto a track, you must make sure you have the appropriate insurance.
- PARKME – VALET MODE. This DRIVE Setting is suitable only for low speeds and slow vehicle manoeuvres. It is ideal when your motor is in the hands of others, helping you protect your vehicle while it is being moved or parked.
- BURBLEME – Sound and tone enhancement using Autotuner One, with or without the addition of a performance exhaust system. On a standard exhaust system, Burble Activation can provide a burbling sound on the overrun. With a performance exhaust system, the sporty and aggressive burble sound can be further amplified, creating a deeper and more pronounced exhaust note as the engine enters overrun strategy. Pops and Bangs are for off-road and motorsport use only.
- POPBANG & STEALTH MODE – Two options are available with Pop & Bang and Stealth Mode. Pop and Bang anti-lag tuning gives you the character and sound when desired, while Stealth Mode offers quieter enhanced performance when you want the car to be more discreet. Use the Autotuner One personal home tuning device to manage your Pops and Bangs tuning. Protect your engine within Stealth Mode and keep your neighbours happy. *Pop Bang and Stealth Mode Package is available only on 2ltr and below engines. For Pops and Bangs on a larger engine, please contact the VIEZU Technical Team for guidance on pricing and options. *Pops and Bangs are for off-road and motorsport use only.
All tuning files are developed by VIEZU’s in-house calibration specialists, with compatibility checked before files are supplied.
Frequently Asked Questions
Can Autotuner One tune both the ECU and TCU?
Yes, on supported vehicles. Autotuner One supports ECU tuning for compatible vehicles, and selected TCU tuning is now available for supported VAG models.
Does VAG TCU tuning work through the OBD port?
The new VAG TCU release for Autotuner One is listed by Autotuner as 100% OBD for supported applications.
Can I use more than one tuning file?
Yes, multiple tuning file options may be available depending on the vehicle and package selected. Your original file can also be retained for restore use.
Who writes the tuning files?
VIEZU’s in-house calibration specialists write the tuning files supplied with Autotuner One.
Do I need to check compatibility first?
Yes. Vehicle support depends on make, model, engine, gearbox and software version. Please contact Paramount Performance before ordering.








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