Custom eTune for the 2016–2018 Ford Focus RS via COBB Accessport. Calibrated to your exact modifications and fuel setup to improve drivability and overall performance, while maintaining safe limits based on your hardware and fuel quality. Same-day e-tuning available by schedule.

Fitment

• 2016–2018 Focus RS (2.3L EcoBoost, 6-MT)

Requirements / Recommendations

• COBB Accessport

• Vehicle must be healthy with no active DTCs or leaks

• 1-step colder spark plugs, gapped to our recommendation

• Fuel: 91/93 octane; Ethanol blends available where the fuel system supports it (ethanol content must be tested)

Policies (summary)

• No refunds once the initial calibration is sent

• 30-day tuning window begins when the initial file is delivered

• If no datalog is received within 30 days, the session becomes inactive; resuming later requires a Re-Engagement Fee

• Warranty disclaimer: an eTune may affect your factory warranty; all tuning is at your own risk

Notes
Results will vary depending on vehicle health, supporting hardware, fuel quality, and conditions. Calibrations are provided in compliance with applicable laws; emissions systems are not disabled. See full Terms & Conditions for details.