01
Vehicle-specific solutions
We focus on the vehicle and ECU — not generic percentage claims.
ECU · TCU · PERFORMANCE
Precision for every calibration.
Professional vehicle optimization, diagnostics and ECU/TCU file services for workshops and tuners, with clear workflows and direct communication.
ECU / TCUDE · EN · TR · FR · IT · ES · AZ · NL · CSFILE SERVICE ONLINE
FELSEN MOTORSPORT
Technical expertise, not empty promises.
We combine control unit technology with hands-on workshop experience. From sound diagnostics to our digital file service.
02
Online workflow
Upload files, track orders and communicate directly in the customer portal.
03
Multilingual support
Website information in nine languages for international workshops.
ONLINE FILE SERVICE
Your file service in three steps
Professional vehicle optimization, diagnostics and ECU/TCU file services for workshops and tuners, with clear workflows and direct communication.
Register free ↗01
Register free
Create an account in the customer portal; start after approval.
02
Submit your file
Enter vehicle details and attach your original readout.
03
Track your order
View status, messages and finished files in the portal.
WHAT WE DO
Our services
Software and diagnostic solutions for professionals and vehicle owners.
ECU programming
Identify ECU types, back up original data and assess appropriate software solutions.
TCU & gearbox software
Transmission control units and vehicle-specific software configurations.
Performance tuning
Calibration based on hardware condition, loads and reliability considerations.
Diagnostics
Systematic analysis of trouble codes, live data and mechanical causes.
ECU repair & cloning
Support with selected ECU repair and data transfer tasks.
Online file service
Submit requests, communicate and manage orders in one portal.
FELSEN MOTORSPORT
Register free ↗Ready for your next file?
Create a free account and explore our file service.