Online ECU Calculators
Have a read/write tool? Skip the mail-in. Upload your ECU read, we byte-verify the exact file, you pay, and the finished file downloads in seconds. Every calculator is version-locked and byte-verified — you're not charged if we can't match your file.
Pick your calculator
Each one processes a specific ECU family. Don't see yours? We do it mail-in.
BMW ME7.2 IMMO-OFF
BMW
Immobilizer (EWS) delete for a Bosch ME7.2 external-flash read. Immo patched out and every ROM checksum corrected — ready to flash.
BMW MS45 IMMO-OFF
BMW
Immobilizer (EWS) delete for a Siemens MS45 external-flash read. Immo patched out, no checksum step — ready to flash in seconds.
BMW MS43 IMMO-OFF
BMW
Immobilizer (EWS) delete for a Siemens MS43 512 KB read (software ca430064). Immo patched out, no checksum step — ready to flash in seconds.
Bosch ME7 EEPROM IMMO-OFF
VW / Audi / SEAT / Skoda
Immo-off for a Bosch ME7 immo EEPROM dump (95040/95080/95160). Layout auto-detected, immo cleared, EEPROM checksum fixed.
GM VATS-OFF (Memcal)
Chevrolet / Pontiac
VATS anti-theft delete for a 1986-1993 GM memcal read. VATS bit cleared and the calibration checksum corrected — your own tune preserved.
Continental GPEC Unlock
Chrysler / Dodge / Jeep / Ram
Instant read/write unlock for Continental GPEC PCM reads so you can read and write with your own tool.
Toyota Avalon IMMO-OFF
Toyota
Immobilizer delete for a Toyota/Denso RA86 (93C86) immobilizer EEPROM read. Single status word patched, no checksum step needed.
No read/write tool, or a module we don't do online yet?
Ship it to us — see all mail-in services.
How the online calculators work
Read your module
Pull a complete read with your own read/write tool — OBD, bench, or boot.
Upload & verify
Drop the .bin on the calculator page. We byte-verify the exact file for free — pay only if it is supported.
Download in seconds
The finished file is returned instantly. Write it back with your own tool.
For diagnostics, repair, engine-swap and standalone builds, motorsport, and off-road use where legally permitted. We do not provide emissions defeat, delete files, or services intended to bypass emissions laws or to enable vehicle theft. The customer is responsible for lawful ownership of the vehicle and compliance with all local, state, and federal law.