Tuned by Westley – Fiesta ST “Rolling Anti-Lag” Tune for Fiesta ST 1.6L

Tuned by Westley – Fiesta ST “Rolling Anti-Lag” Tune for Fiesta ST 1.6L

Off-Road Use Only: Designed for off-road applications to enhance the auditory experience.

Tuned by Westley at EMS and tested across multiple Fiesta ST platforms, this add-on brings rolling anti-lag functionality to your existing tune. Rolling anti-lag keeps the turbo spooled at a set RPM while rolling, so when you get back into the throttle the boost is already there. This is not a launch control system and does not hold boost between shifts — it is purpose-built for roll racing, giving you instant turbo response from a rolling start.

Key Details:

• Off-Road Use Only — anti-lag significantly increases stress on turbo and exhaust components and will destroy catalytic converters. This tune is designed for off-road and track use only.
• Rolling Anti-Lag — spools the turbo at a set RPM while rolling, delivering immediate boost response when you get back on the throttle.
• Built for Roll Racing — not a launch control or between-shift boost retention system. Designed specifically for rolling speed applications.
• Customization — tailored specifically to your Fiesta ST’s setup for optimal boost response and performance.
• Compatibility — can be applied to Off-The-Shelf (OTS) and custom tunes created by EMS. Not recommended for stock turbo applications.

Applications:

• 2014-2019 Ford Fiesta ST 1.6L EcoBoost

Please note: Anti-lag is not recommended for stock turbo applications as it significantly increases stress on turbo components. Both anti-lag and ignition cut configurations will destroy catalytic converters. This tune is intended for off-road or track use only.