• USD
  • EUR
  • GBP

ESS Tuning - E-Flash ECU Performance Software - BMW E70 X5M & E71 X6M




The ESS X5M/X6M E-Flash Performance ECU software is a result of extensive testing and exact calibration of ECU parameters to allow considerable performance gains on an otherwise stock car. The ESS S63 performance software is developed and tested in extreme heat in the Arizona desert as well as extreme cold temperatures in Scandinavia. Typical peak gains are in the 40-50whp range. Catless exhaust option available upon request. ESS E-Flash also includes full engine diagnostic functionality and code clearing capabilities.

When ordering this product you will receive 1 ESS E-Flash OBD2 programming system which will VIN lock to your car. This system can be used to program between stock and tuned, and it can also be used to load custom files/race fuel files/updates received from ESS over email. For those with specialized set-ups, custom tuning is available per an hourly basis. Files can be loaded with DirectFlash unit through email.

- Gains +40-50hp
- Gains +75-85 ft-lb tq
- Top Speed Governor Removed
- 7000RPM Limit
- Fuel requirement: 91US/95Euro

Models Supported

To download the latest version of E-Flash software, click here.

WARNING: May contain items that are found to have compounds and/or chemicals known to the State of California to cause cancer, birth defects, and reproductive harm.
For more info, please visit