Ecu flasher ecu programming tools for toyota/lexus read write via internal 20 pin or 26 pin connector for nec 7f00xx series mcu the toyota lexus ecu flasher is a specialized, high-speed programmer designed specifically for denso and fujitsu ten ecus equipped with nec processors. developed as a unique solution for the chip tuning world, it allows for deep-level access to the engine control unit (ecu) and transmission control unit (tcu) without the need for annual subscriptions or complex driver setups.