CHECKSUM ECU file service
Automatically calculates and corrects your modified file’s checksum; if your tool cannot do checksums, we do it for you.
01 How it works
- Upload the original read of your ECU. The system detects the ECU and software (SW) number.
- Select CHECKSUM. The checksum module for your ECU recalculates your file's checksum automatically.
- Your file is returned with the corrected checksum. If your ECU has no checksum module, the file is left unchanged and the checksum stays with your own tool.
- Download the finished file. The system works 24/7, also at night and on weekends.
02 Automatic module
Checksum correction is handled by built-in checksum modules for 63 ECU types. The module recalculates the checksum of your own modified file automatically.
03 Written by engineers, tested on a dyno
Every stored CHECKSUM solution is written by our engineers with professional tuning tools — WinOLS, StageX, ECM Titanium and our own Tuning Editor — and the file is tested on a dyno before it is added to the system and sent to customers. When your job matches a stored solution, the system applies it automatically, so what you receive is a solution that an engineer has already written and tested. 2 such solutions have been applied 1 times so far.
04 Brand groups with CHECKSUM solutions
05 ECU types with the most CHECKSUM solutions
06 Related services
DTC OFF
Permanently disables the fault codes (DTC) you select; you need to provide the P codes to turn off.
IMMO OFF
Disables the immobilizer system so the vehicle can start and run.
MISFIRE OFF
Disables misfire fault detection caused by the ignition system.
KNOCK OFF
Disables the knock sensor on supported models.
HOT START
Fixes the rough/delayed starting issue (hot start) that occurs when the engine is hot.
COLDSTART OFF
Disables the cold-start program that raises idle and runs the engine loudly during warm-up.
Frequently asked questions
What is CHECKSUM?
Automatically calculates and corrects your modified file’s checksum; if your tool cannot do checksums, we do it for you.
Is the checksum corrected automatically?
Checksum correction is a separate, optional operation. When you select CHECKSUM, the checksum module recalculates and corrects your file's checksum for the 63 ECU types in the checksum catalog. For other ECUs the file is left unchanged and the checksum stays with your own tool.
Which vehicles support CHECKSUM?
We have 2 engineer-made CHECKSUM solutions covering 2 ECU types across 2 brand groups. The lists on this page show the brand groups and ECU types with the most solutions.
How do I order CHECKSUM?
Sign in, upload the original read of your ECU, choose CHECKSUM and download the finished file. Checksum correction is a separate, optional operation (CHECKSUM) on supported ECUs. Where we already have a matching solution the file is processed automatically; other jobs are handled by an engineer.
Are the solutions tested?
Yes. Our engineers write every solution with professional tuning tools and test each file on a dyno before it is added to the system.
Ready for CHECKSUM?
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