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ESS Normal Aspiration optimized 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. RPM limit is increased to 6700RPM (7000RPM in 330 ZHP), and top speed governor is removed.
Throttle response programming is greatly improved over stock.
Power is increased by 10 whp and 10lbs/ft of torque when programmed for premium fuel (91US/96Euro).
Special programming for custom setups are available on request.
When ordering this product, you will receive the ESS E-Flash reprogramming interface so you can upload the software yourself through the OBD2 port.
Application intended for: E46 330i, 330i ZHP, E60 530i, E85 Z4 3.0i from 2003 2004 2005 2006