ESS Tuning E-Tronic Performance Tuner Kit - F8X M3/M4

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FEATURES
  • 550 hp // 560 lb/ft torque
  • Designed for 91-100 octane fuel / Dyno results shown with 91 octane
  • Cam / MAF / MAP sensor integration without any wire cutting or splicing
  • OEM grade hardware connectors
  • Bypass connector to easily return the car to stock without removing the hardware
  • Weather sealed casing
  • 2-year warranty

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