Register for free and load credits
Open an account at the portal. Registration does not cost anything. Credits are added in the portal and used one file at a time.
For workshops, tuners and dealers
ECU Tuning File Service for Tuners and Workshops
The ECU tuning file service supplies workshops and tuners with tuning files, usually within 20 to 40 minutes.
Files are developed and checked on our own dyno before they are ready to write to the control unit.
- 20–40 min on average, max. 1 hour
- Mon–Sat 8 am–8 pm
- Revisions included
- Our own dyno
- Free registration, credits do not expire
- Over 14,200 vehicles
How our ECU tuning file service works
Four steps take a stock file from your tool to a modified file you can write back. The read file stays the basis of the job, and the written brief states the goal. Registration in the portal is free. You pay for the work with credits, not with a subscription on this page.
Upload the original file and describe the request
Send the original read from the vehicle and state what you need: stage 1, a custom calibration, or an economy file. Master and slave files from the tools listed below are accepted.
Usually 20 to 40 minutes, never more than one hour
Within the service hours, Monday to Saturday, 8 am to 8 pm (CET/CEST), a file is handled in 20 to 40 minutes as a rule, and within one hour at most.
Download the modified file and write it
You collect the file in the portal and write it with your own tool. If the result is not what you asked for, a revision is included and does not cost extra credits.
Files that arrive outside these hours are taken up at the start of the next service day.
File services
The file service covers the calibrations workshops ask for in daily work. Each request is tied to the original file from the vehicle. We do not publish prices here; billing stays in the portal.
Stage 1
A stage 1 file raises output on the stock hardware within the limits we calibrate for that control unit. It is the usual first step for a workshop that wants a defined, repeatable result for a customer car.
Custom calibration
A custom file is built around one vehicle and the request that comes with the upload: drivability, a specific load range, or a result you have already measured. It is the right path when a standard stage 1 file is not the brief.
Economy tuning
An economy file is aimed at consumption rather than peak power. Fleets, vans and long-distance trucks use it when the brief is lower fuel use on the same route.
Dyno measurement
Power and torque can be measured on our dyno before and after the file. The measurement is a separate service from the file itself and is booked as a dyno run.
Developed on our own dyno
Calibrations are developed and checked on our own dyno in Krostitz. The bench is part of the workshop, so a file is not only written at a desk: the result can be measured on the same site.
A published example of that work is the performance report on the BMW M340d xDrive. The report shows how we document a measurement; it is one vehicle, not a promise for every other model.
Dyno measurement · Example: BMW M340d xDrive performance report
All common tuning tools supported
We process files from all common master and slave tools. The original read and the modified file stay in the format your tool writes.
Autotuner
Autotuner master and slave files are processed in the file service, including the slave files written by the Autotuner Slave from our shop.
Alientech KESS3
Alientech KESS3 and K-TAG files, both master and slave, are accepted with the original read and the requested change.
Dimsport
Dimsport New Genius and New Trasdata files are handled for master and slave workflows.
Magicmotorsport FLEX
Magicmotorsport FLEX master and slave files are processed in the same queue as the other tools.
CMD Flash
CMD Flash master and slave files can be uploaded with the original and the brief.
bFlash
bFlash master and slave files are supported in the same way.
Your tool is not listed? Talk to us – we process files from all common tools.
Newly supported control units are reported on an ongoing basis. Autotuner, Dimsport, Magicmotorsport.
Master/slave files, chiptuning files and remap files are all handled as an original read plus a written brief. Custom tuning files follow the same timing.
Tuning files for cars, trucks, agricultural and construction machinery
Tuning files are prepared for cars, trucks, agricultural machinery and construction machinery. The public vehicle list on this website currently covers over 14,200 vehicles with power figures. That list is the catalogue customers see; a file for a workshop is still ordered from the original read, not from the catalogue alone.
Cars
Passenger cars are the largest share of the catalogue, from everyday engines to performance models. A workshop uploads the original file and states whether the brief is stage 1, a custom calibration or economy tuning.
Trucks
Truck files cover commercial vehicles whose control units are read with a master or slave tool. Economy tuning is a frequent brief when the vehicle spends its life under load.
Agricultural machinery
Tractors and other farm machines are read with the same tools where the control unit is supported. The file follows the original read, as with a car.
Construction machinery
Construction equipment is handled when the control unit can be read with a supported tool. Tell us the machine and the read method in the upload.
These are the 20 marques with the most vehicles in the database. Each link opens the public model list.
Credits: no expiry, free starter credits for slave customers
Registration in the portal is free.
Credits are loaded in the portal and used per file. This page does not list prices.
Credits do not expire.
A revision does not cost additional credits.
New customers receive 1,000 credits with the Autotuner Slave in the VTEC file service. We add the balance after you register in the portal. These are the starter credits for a new slave customer, on the same terms as on the shop product.
Getting started with a slave tool
Slave tools are sold in our own shop. The slave tool in the shop is the Autotuner Slave. A new slave customer starts with the 1,000 starter credits described above, added after portal registration. Partnership terms, beyond the file workflow on this page, are set out on the partner page.
File service for tuners worldwide
Support is in German and English, and tuners from abroad are welcome. The portal and its ticket system can be used from anywhere. Service hours are Monday to Saturday, 8 am to 8 pm (CET/CEST). A file service for tuners outside Germany uses the same queue, the same maximum of one hour, and the same revision policy.
The file service for dealers uses the same portal account as a workshop account: free registration, credits that do not expire, and support in two languages.
Why tuners work with VTEC
- A defined maximum: usually 20 to 40 minutes, and at most one hour, inside the service hours.
- Long hours: Monday to Saturday, 8 am to 8 pm (CET/CEST).
- Revisions are included, at no extra cost and without extra credits.
- Files are developed and checked on our own dyno.
- All common master and slave tools are supported.
- Registration is free, and credits do not expire.
- New Autotuner Slave customers receive 1,000 starter credits after they register in the portal.
- Personal support in German and English, by phone, WhatsApp and the ticket system in the portal.
- The workshop in Krostitz works on vehicles every day, so file requests sit next to real workshop practice.
Support
Reach the file-service support by phone, WhatsApp or the ticket system in the portal, Monday to Saturday, 8 am to 8 pm (CET/CEST). Support languages are German and English. The phone number is +49 34294 843751.
Frequently asked questions
How quickly do I receive my file?
As a rule the file is ready in 20 to 40 minutes, and within one hour at most, during service hours. Files that arrive outside these hours are taken up at the start of the next service day.
When is the file service available?
Monday to Saturday, 8 am to 8 pm (CET/CEST).
Does registration cost anything?
No. Registration in the portal is free.
How is the work billed?
Billing is by credits in the portal. Credits are loaded there and used per file. This page does not list prices.
Do my credits expire?
No. Credits do not expire.
Do I receive starter credits as a new slave customer?
New customers receive 1,000 credits with the Autotuner Slave in the VTEC file service. We add the balance after you register in the portal, on the same terms as on the shop product.
What happens if a file does not behave as requested?
A revision is included, at no extra cost and without additional credits.
Which tools are supported?
All common master and slave tools, including Autotuner, Alientech KESS3 and K-TAG, Dimsport New Genius and New Trasdata, Magicmotorsport FLEX, CMD Flash and bFlash. If your tool is not listed, ask us: we process files from all common tools.
For which vehicles are files available?
Cars, trucks, agricultural machinery and construction machinery. The public catalogue lists over 14,200 vehicles with power figures. A workshop file is still ordered from the original read.
Are the files tested on the dyno?
They are developed and checked on our own dyno in Krostitz. A separate dyno measurement of a vehicle can be booked as its own service.
How do I reach support, and in which languages?
By phone on +49 34294 843751, by WhatsApp, or through the ticket system in the portal. Languages are German and English. Hours are Monday to Saturday, 8 am to 8 pm (CET/CEST).
Do you work with tuners outside Germany?
Yes. Tuners from abroad are welcome. The portal and the ticket system work from anywhere, support is in German and English, and the service hours are CET/CEST.
Register in the portal at no charge, or speak to us about a partnership. VTEC Chiptuning, Am Bahndamm 9, 04509 Krostitz, near Leipzig, Germany.