ECUHELP KT200II has been successfully tested to program the ECU of a 2014 Ford Mustang 3.7L. This includes reading and writing the Continental NHE8 5WY8 ECU via OBD, with autochecksum for Stage 1 tuning.

Vehicle: Ford Mustang
Engine: 3.7L
Year: 2014
ECU Model: Continental NHE8 5WY8

OBD Programming:
The KT200II performed reading and writing operations via OBD with 100% success. The autochecksum feature for Stage 1 tuning was also verified to work correctly.
KT200II Read Ford Mustang Continental NHE8 5WY8 via OBD

Conclusion:
ECUHELP KT200II is confirmed to be a reliable tool for programming the ECU of a 2014 Ford Mustang 3.7L. It effectively handles OBD read and write operations with autochecksum for Stage 1 tuning, ensuring accurate and efficient performance.