Welcome to STealthwerx Performance

Specialist Diagnostics | ECU Calibration | Servicing | Performance Development

Based in Norwich, Norfolk, STealthwerx Performance has built its reputation over the past decade through specialist knowledge, technical expertise and a commitment to doing things properly.

While our roots are firmly established within the Ford performance community, particularly the 2013-onwards Fiesta ST Mk7.5 and other Fast Ford models, our experience extends across a wide range of manufacturers, including BMW, MINI, Volkswagen, Audi and other performance platforms.

From advanced diagnostics and fault investigation to specialist servicing, preventative maintenance and custom ECU calibration, we provide a comprehensive approach to vehicle care, reliability and performance.

Our foundations date back to the mid-1990s, when founder Gareth developed a passion for understanding how things work, solving problems and finding ways to improve them.

That same philosophy remains at the heart of STealthwerx today.

We believe that achieving the best results requires more than following conventional methods. It means questioning assumptions, analysing the finer details and approaching challenges with an open mind.

Whether investigating a complex running issue, maintaining a performance vehicle or refining an ECU calibration, we apply the same attention to detail and determination to achieve the best possible outcome.

Always questioning. Always improving. Always looking for that final 1%.

Contact Us

Interested in our services?

For quotations or general enquires, fill out our contact form below or for a quicker response, message us via whatsapp

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