STX Tuning
WhatsApp STX TuningCall STX Tuning

Shop / SEAT

SEAT ECU Remapping & Tuning

SEAT uses Volkswagen Group TSI and TDI engines across Leon, Ateca and other models, with performance and economy tuning options depending on the exact engine.

Select your engine to see what is available.

4.9/5500+ Google ReviewsSee Google ReviewsBuild My SEAT Tuning Request WhatsApp STX Tuning

SEAT Ibiza

Mk5 · 2017-present

SEAT Ibiza Cupra

6P · 2015-2017

SEAT Leon

Mk3 · 2012-2020

SEAT Leon Cupra

5F · 2015-2016 / 2014-2015 / 2017-2020

SEAT Leon Cupra R

1P / 5F · 2009-2012 / 2017-2018

SEAT Leon Cupra ST 4Drive

5F · 2017-2020

Identify your SEAT engine before choosing a tune

The 6 listed model families above cover the records currently in our library, not every SEAT ever produced. Select the generation and factory output matching your car; a shared model badge does not guarantee the same engine, ECU or gearbox.

Stage 1 normally retains standard performance hardware; Stage 2 requires the parts specified for that engine. Some ECUs need unlocking or workshop access at our Slough workshop.

SEAT gearbox considerations

Manual and DSG versions are tuned with different torque limits in mind.

Available figures are estimates, not a dyno result for your vehicle. If your engine is missing, send the registration and configuration for assessment rather than applying another variant's numbers.

Compare tuning optionsGearbox supportWorkshop or mobile

Get Your SEAT Remap Quote

Select one or more services and send your enquiry to STX Tuning.

Your vehicle
What do you need?
Where would you prefer the work?
Your details

We save your enquiry first, then WhatsApp opens with your message ready. Press Send in WhatsApp to complete it.

Call STX: 01753 439130
  • 4.9/5 Google rating · 535 reviews
  • Slough workshop
  • Vehicle-specific quotes

No payment needed. We use your details only to handle this enquiry. See our privacy policy.

Google Customer Reviews

Don't Just Take Our Word For It.

See what customers say about their experience with STX Tuning.

Google Reviews

4.9

535 Google Reviews

  • Jonathan Liska

    Oct 2026

    Really fast service, I explained what I needed to solve my problem with the car and they got the parts in, did the work and all was done smoothly and efficiently. Nice workshop and friendly, polite staff.

    Posted on Google · view on our Google profile

  • Chris Green

    Aug 2026

    Contacted these guys and they came out within 2 days fixed the car and now all is perfect again really happy with the remap done on my car too very polite, efficient service and would highly recommended

    Posted on Google · view on our Google profile

  • Tiinkerj

    Jul 2026

    I wanted to leave a genuine review, I got my car remapped on the 5th June 2026. Making the appointment was very easy, I didn’t have to wait too long for an appointment and had the option for someone to come to my house if needed. The remap was done within an hour or so. My light did come back on a week after the remap was done, but I was able to clear it with no issues and last weekend I took a 4 hour round trip to the beach and the light did not come back on when usually it does after about 1hr into a drive. The point of my long review is I highly recommend this company and I am very happy with the service provided.

    Posted on Google · view on our Google profile

  • Oscar Rapala

    Jun 2026

    First time tuning my car. Didn’t know what to expect but it was amazing. They explained everything to me clearly, how it works etc and before you know it my car was ready. 10/10 polite service. Will be coming back in the future with serious motors, can tell these guys are professionals judging by tons of performance cars outside.

    Posted on Google · view on our Google profile

  • Jamiah Woodroffe

    Apr 2026

    Really five star service I’ve only got my car the day before I messaged on a Sunday just as an inquiry was more than Happy to take time of the day on a Sunday to fit me in last minute just want to think the whole team very professional and I absolutely love my car. I felt an instant power boost and explained everything to me and packages that I can definitely most likely in the future upgrade to will be definitely coming again.

    Posted on Google · view on our Google profile
Read all Google reviews Ask STX on WhatsApp