Guides
ECU and TCU tuning guides
Plain answers to the questions workshops and tuners ask before they send us a file.
Master vs slave tuning tools: what to send a file service
The difference between master and slave ECU tuning tools, why a slave read is encrypted, and how to use a slave tool with Remapify.
Read the guideWhat ECU read to send for a remap
What to send a tuning file service: a master read, sent as your tool saved it, up to 50 MB, not zipped. Plus how to identify the ECU when you order.
Read the guideDoes my gearbox need a TCU tune after a Stage 2 remap?
A TCU tune is not required with a Stage 2 remap, but it is recommended whenever the ECU is tuned: it removes TCU torque limits so the gearbox holds more.
Read the guideHow to read a BMW GS20 TCU (GM 5L40E) for tuning
Reading the Siemens GS20 TCU that runs the GM 5L40E in BMWs: which tools read it, which do not, and how to send the read for a custom gearbox tune.
Read the guide
Open a trade account.
Every remap and TCU file is calibrated by hand, from your own read. Accounts are free and reviewed before they are activated.