x20d 184/163 ESS E-Flash ECU Tuning Software

ESS 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.

Part number: 101-121
Horsepower: 220 DIN (Stock 184)
Torque: 480NM
Installation is done through a ECU flash update. You will receive instructions on how to remove and send in ECU when you order this product.

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.

Correction factor for drivetrain loss is 15% above RWHP as seen in dynograph (RWHP/0.85)

Application intended for: BMW E81 E82 E87 E88 E90 E91 E92 E93 120d 320d 184/163(detuned) hp version from 2010 2011