OEM+ Stage X V1/V2/v3 upgrade to V4

OEM+ Stage X V1/V2/v3 upgrade to V4

  • $50.00
    Unit price per 

Fiesta ST OEM+ Stage X V4 Tunes are now available!

Change Log:

  • Torque truncation in over drive gears for superior knock control
  • Advanced and proprietary OAR strategy to react and pull timing faster than OEM
  • Increase in midrange power on e50, and more midrange/top end power on 91/93.
  • Smoother drivability during tip-in conditions
  • More power mid range and up top

Only select the upgrade all map options if you have more than 1 map already and are upgrading multiple maps to V4. 

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