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COBB BMW N54 Accessport V3

The Accessport is the world's best selling, most flexible, and easiest to use ECU upgrade solution for your BMW. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations.

ESS BMW N54 E-Flash Performance Software

  • Fits (07-11) E8X 135i, E9X 335i, E6X 535i & E89 Z4 S-Drive35i

ESS E-Flash N54 ECU software is a result of extensive testing and exact calibration of ECU parameters to allow conservative performance gains on an otherwise stock car.


ESS F-Series 35i N55 E-Tronic Tuner

  • ESS E-tronic provides safe, simple to add power to the already potent 135i/235i/335i/435i/535i/X3 3.5i and X5 3.5i.
  • Installation time est 30-45 min.

GIAC E6X/E8X/E9X (2007+) 135i/335i/535i 3.0L N54 Programming

  • GIAC performance software for the 2010 - 2007 E9x 335 smoothly delivers a 60 - 110 hp and 60 - 150 ft-lbs gain.
  • Can be performed in-house at Tunerworks without having to ship ECU out for programming.
  • For optimum performance the software must be coupled with exhaust and intercooler.