Pcmflash 1.21 ~upd~

If you are just starting in ECU tuning, v1.21 with a cheap Kess v2 clone is an inexpensive entry point – but always test on scrap ECUs first.

Here is a standard workflow for flashing a GM ECU using version 1.21 on a bench setup. Pcmflash 1.21

: Works with standard J2534-compatible adapters such as Scanmatik 2 Pro, OpenPort 2.0, and Mongoose JLR. If you are just starting in ECU tuning, v1

Significant improvements were made to this widely-used module, which handles Bosch MEDC17 ECUs in Bench mode (no opening of the ECU required). Extended Diagnostic Support: Pcmflash 1.21