ESS E8X 1-Series Stage 1 ECU Performance Software

SKU: ESS-101-103

Regular price $895.00



ESS N55 Stage 1 ECU software is a result of extensive testing and exact calibration of ECU parameters to allow significant performance gains on a stock or lightly modified car (intake/exhaust/IC). The Stage 1 software is developed and tested in extreme heat in the Arizona desert as well as extreme cold temperatures in Scandinavia. Typical gains are in the 40-45whp range. Catless or HFC option is not available for customers in California.

  • Top Speed Governor: Removed
  • RPM Limit: 7100RPM
  • Fuel requirement: 91-93US/ 98Euro
  • Horsepower: 360 DIN (Stock 306)
  • Torque: 490NM (Stock 400NM)
  • Installation is done through a ECU flash update, the ECU must be sent to a ESS reprogramming center for the software upload.

*Correction factor for drivetrain loss is 15% above RWHP as seen in dynograph (RWHP/0.85) Power rating is dependent on fuel quality.



BMW E8X 1-Series 135i N55  2010 - 2012

Product Inquiry

Dealer Application