ABOUT Legendary performance

Legendary Performance are specialists in the development of engine management software where we have a specialist team of graduate level software developers. All of our software development is carried out in house using our state of the art facilities which very few companies can rival, even internationally.

We offer a fully mobile, non-invasive ECU tuning service using the latest software and diagnostics tools. Our process is streamlined and hassle-free. When we arrive, we connect to your vehicle’s ECU, extract the current software, and send it for analysis. From there, a bespoke remap is created specifically for your vehicle and driving goals — whether that's more power, better throttle response, or greater fuel efficiency. Once the new software is ready, we upload it back to your car on the spot. The whole process takes around 1.5 hours, with no engine dismantling or downtime.

What sets us apart is our commitment to quality and personalisation. Every tune we deliver is built from scratch, tailored to the driver and the vehicle. We don’t deal in off-the-shelf maps — our calibrations are carefully crafted to maximise safe performance and reliability. From performance enthusiasts to business fleet owners, our customers trust us because we take the time to understand what they want and deliver real, measurable results.

Based in the UNITED KINGDOM

Sheffield, South Yorkshire

LEGNEDARY PERFORMANCE

LEGNEDARY PERFORMANCE

Want to Discover how we can take your vehicle to the next level?

Get In Touch