Ford's ST hot hatches are legendary for their chassis dynamics and punchy turbocharged engines, but strict factory limits leave substantial performance on the table. A custom Stage 1 ECU remap safely increases power by up to 31 hp and torque by up to 90 Nm. Read on to see the exact manufacturer and tuned specs for the Fiesta ST (Mk7, Mk8) and Focus ST (Mk2, Mk3, Mk4) from the Superflow Performance database.
For decades, Ford's Sport Technologies (ST) badge has represented the pinnacle of accessible, real-world performance. Hot hatchbackbacks like the Fiesta ST and Focus ST are highly praised for their sharp handling, engaging gearboxes, and highly tunable turbocharged engines. However, because Ford must build cars that survive variable fuel quality and strict global emissions regulations, they limit these cars significantly from the factory.
At Superflow Performance, our custom ECU remapping services tap into these built-in safety margins. By optimizing parameters like boost pressure, ignition timing, and fuel maps specifically for South African conditions and 95-octane petrol, we transform how these hot hatches drive without pushing the hardware past its design limits.
Two legends of different eras: The raw, 5-cylinder Focus ST Mk2 next to the razor-sharp, 4-cylinder Fiesta ST Mk7.
Ford Fiesta ST Tuning: Giants in Miniature
The Fiesta ST is often called the benchmark pocket rocket. Across both the four-cylinder Mk7 and three-cylinder Mk8 generations, the chassis begs for more power, and the EcoBoost engines are incredibly happy to provide it.
Fiesta ST Mk7 (2013 - 2017) – 1.6 EcoBoost
Equipped with a robust 1.6L 4-cylinder turbocharged EcoBoost engine (commonly known as the ST180), this platform is a tuning favorite. A Stage 1 ECU software upgrade wakes up the mid-range torque, turning it into a lightweight weapon that punches far above its weight class.
Fiesta ST Mk8 (2017 - Present) – 1.5 EcoBoost
The Mk8 generation shocked purists by dropping a cylinder, moving to a 1.5L 3-cylinder turbocharged engine. However, this motor is a masterpiece. It features rapid spooling and responds brilliantly to software calibration, particularly in the torque department where it gains a massive 80 Nm on Stage 1.
Fiesta ST Mk7 (1.6T)
Fiesta ST ST200 Edition (1.6T)
Fiesta ST Mk8 (1.5T 3-Cyl)
Ford Focus ST Tuning: The Heavyweight Contenders
If the Fiesta is a scalpel, the Focus ST is a sledgehammer. Offering more room, more stability, and larger displacement engines, the Focus ST has evolved through three distinct turbocharged generations, each with its own unique engine character.
Focus ST Mk2 (2004 - 2010) – 2.5T 5-Cylinder
Loved for its legendary warble, the Mk2 Focus ST features a Volvo-sourced 2.5L 5-cylinder turbocharged engine. In stock form, it is heavily detuned. With a custom Stage 1 remap, we lift the heavy factory torque restrictions, allowing the 5-cylinder engine to breathe fully and produce a healthy 400 Nm.
Focus ST Mk3 & Mk3.5 (2011 - 2018) – 2.0 EcoBoost
The Mk3 generation shifted to a 2.0L 4-cylinder EcoBoost. This engine delivers instantaneous torque but suffers from a very restrictive factory exhaust and mapping curve that dies off in the upper RPMs. Our custom Stage 1 remap smooths out the power delivery, extending the power band and adding up to 90 Nm of torque in the mid-range.
The facelifted Ford Focus ST Mk3.5 (2.0T EcoBoost) in Deep Impact Blue. A software calibration completely transforms this car's responsiveness.
Focus ST Mk4 (2018 - Present) – 2.3 EcoBoost
The latest generation Focus ST inherits a detuned version of the Mk3 Focus RS engine—a 2.3L EcoBoost. Because it utilizes a larger twin-scroll turbocharger, it has massive headroom. Even a mild Stage 1 remap results in a wall of torque, peaking at 480 Nm while remaining extremely safe for the engine internals.
Focus ST Mk2 (2.5T 5-Cyl)
Focus ST Mk3 (2.0T EcoBoost)
Focus ST Mk3.5 Facelift (2.0T)
Focus ST Mk4 (2.3T EcoBoost)
Why Choose Superflow Performance for your Ford ST?
Ford's EcoBoost engines are highly sophisticated, featuring complex safety strategies for component protection (LSPI, exhaust gas temperature limits, boost pressure targets). Simply loading a generic "file-service" map onto these cars is a recipe for engine damage.
At Superflow Performance, our remapping process includes:
- Live Datalogging: We log ignition correction, high-pressure fuel pump pressure, manifold charge temperatures, and boost targets to ensure your car runs safely.
- Linear Torque Delivery: Fords are front-wheel drive. Giving them a sudden "spike" in torque leads to wheelspin and clutch slip. We build maps with a smooth, progressive torque curve.
- Octane Calibration: We specifically calibrate our software to maximize power safely on local South African 95 Octane pump fuel.
Transform Your Hot Hatch Today
Unlock the performance Ford left on the table. Whether you drive a classic 5-cylinder Focus ST or the latest three-cylinder Fiesta ST, our remapping will make your car feel lighter, faster, and far more responsive.
Book Your Custom Remap Today
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