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S-Drive35i

  • $695.00 Choose Options N54 Stage 1 ECU Performance Software
    ESS N54 Stage 1 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...
  • $795.00 Choose Options N54 Stage 2 ECU Performance Software
    ESS N54 Stage 2 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 2 software is...
  • $895.00 Choose Options N54 Stage 3 ECU Performance Software
    ESS N54 Stage 3 ECU software is a result of extensive testing and exact calibration of ECU parameters to allow maximum performance gains with a sustained margin of safety. Typical gains are in the 80-90whp range...

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