ESS Tuning

ESS Tuning - E-Flash ECU Performance Software - BMW E46 M3

Shipping calculated at checkout.

The ESS E-Flash OBD2 programming system allows the end user to upload the ECU tuning software directly to the car from any PC running Windows XP or newer. The system also includes full diagnostic and code clearing capability. Any future ESS software updates can be received by email and loaded directly to the car. The stock ECU software will be saved and can easily be restored in the future.

ESS S54 Alpha N ECU software is a result of 100's of dyno runs and exact calibration of all parameters to allow maximum performance gains with improved driveability/fuel consumption and stock engine longevity. Removed top speed governor is included, and you have the option of stock RPM limit or up to 9000RPM, default setting from ESS is 8200 unless otherwise instructed. The Alpha-N software is ideal for MAF less intake conversions. A intake air temperature sensor with harness is included in the package and must be installed in the intake air-path.

Power is increased by 10-15 WHP when programmed for premium fuel (91US/96Euro). Throttle response programming is improved over stock. Euro software conversion is available for US spec cars with euro headers installed. Custom tuning available on request, vanos timing programming for extreme camshafts also available.

- Gains 10-15hp
- Top Speed Governor Removed
- 9000RPM RPM Limit
- Activation of gauge-shifter lights on 6MT models
- Unlocked dyno mode (Don't need Autologic/GT1 to dyno)
- Factory VANOS mapping and torque parameters are re-calibrated
- Fuel requirement: 91-93US/ 98Euro

Models Supported
BMW E46 M3

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

Product information