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ESS Tuning

ESS E9X 3-Series E-Flash N54 "is/1M" spec ECU Performance Software

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ESS E-FlashFlash N54 "is/1M" ECU software is a result of extensive testing and exact calibration of ECU parameters to allow conservative performance gains on an otherwise stock car. The ESS 335i software is developed and tested in extreme heat in the Arizona desert as well as extreme cold temperatures in Scandinavia. The end user can select between 2 different power levels and cat/no cat in the DirectFlash unit. ESS E-Flash also includes full engine diagnostic functionality and code clearing capabilities.

DirectFlash Stage 1 :

  • Top Speed Governor: Removed
  • RPM Limit: 7200RPM
  • Fuel requirement: 91US
  • Horsepower: 400 DIN (Stock 335) - 390 DIN if used with stock intercooler
  • Torque: 550NM
  • Normal whp range on DynoJet: 345-365whp

When ordering this product you will receive 1 ESS E-Flash OBD2 reprogramming 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.

Catless or HFC option is not available for customers in California)


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



BMW E9X 3-Series 335is

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