STX Tuning
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Specialist Software

OPF / GPF Services

An OPF or GPF is a petrol particulate filter. Warnings can have several causes, and exhaust changes do not all require the same response. STX Tuning reviews the vehicle, codes and fitted hardware before discussing an available assessment or software service.

4.9/5500+ Google ReviewsSee Google Reviews
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Your vehicle and request

Read the service scope, then send your vehicle details, current modifications and intended use for assessment.

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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

  • 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

  • Tracy

    Jan 2026

    Amazing company, arrived within 2 hours of my call and fixed the problem where another garage had failed. So happy to have the issue resolved, technician was so nice and explained everything, excellent service, highly recommend STX Tuning

    Posted on Google · view on our Google profile

  • Jake Bickmore

    Dec 2025

    STX Tuning were absolutely brilliant. The service was super fast — same day turnaround — and they solved an issue with my car that a main dealer claimed would cost me thousands to fix. It turned out the expensive repair wasn’t even necessary, and STX handled it quickly and professionally. Honest, efficient, and highly recommended!

    Posted on Google · view on our Google profile

  • Matthew Mooney

    Nov 2025

    STX were great! (its within ONYX which confused me when I got there, no biggy, just for anyone else reading it). I happened to be arriving when a guy must have been starting their shift, super helpful and got me to the right person. On the way in they even took the time to show my son the Lambo they had, this type of service is so nice to receive. The young guy we spotted fitting the wheels later on, thank you! In for a Stage 1 remap, all done in 30 minutes, and car drives brilliantly and exceeded expectations. Also at a great price as well. All staff I met were super nice and helpful. Credit to you guys! I will definitely be choose these guys going forward! Highly recommend.

    Posted on Google · view on our Google profile
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We assess your vehicle and request

We review the vehicle details, warning or requested change, existing modifications and intended use. We explain the available assessment or software route and confirm a quotation before booking.

What the warning or request tells us

A code or dashboard message is information for assessment, not a definitive diagnosis. Send the exact code, symptoms, fitted hardware and any previous software changes. Modified exhausts do not automatically require software changes or cause limp mode.

Scope and intended use

Software does not repair failed mechanical parts, sensors or wiring. Removing or disabling emissions equipment is not offered for road-going vehicles. Off-road, competition or export descriptions do not automatically establish eligibility; the application must be assessed.

Who It's For

  • GPF-equipped cars with exhaust modifications
  • OPF/GPF warning lights and fault codes
  • Stage 2 builds on 2018+ petrol vehicles
  • Owners wanting accurate advice, not guesswork

Real Benefits, Realistic Expectations

  • Vehicle details reviewed before quotation
  • No assumed compatibility or guaranteed outcome
  • Scope and intended use checked first

How It Works

  1. 01

    Send your vehicle and request

    Include exact codes, current hardware and intended use.

  2. 02

    We assess your vehicle and request

    We review the vehicle details, warning or requested change, existing modifications and intended use. We explain the available assessment or software route and confirm a quotation before booking.

  3. 03

    Confirm appointment requirements

    Programming access and workshop or suitable mobile arrangements depend on the vehicle and agreed work.

Check Your Vehicle

Check the exact engine, software support, existing modifications and appointment requirements before booking.

Search Your Vehicle

Workshop & Mobile Availability

Workshop or mobile suitability depends on vehicle access, postcode and agreed scope. No universal mobile availability or duration is promised.

Common Questions

Does a warning identify a failed part?

No. A code can have several causes. An enquiry does not establish a diagnosis or confirm that software is appropriate.

Is a service confirmed when I select it?

No. STX Tuning checks the exact vehicle, intended use and supported functions before confirming any available service or quotation.

Can the work be carried out mobile?

Only where the exact vehicle, programming requirements, location and agreed work are suitable. Workshop access may be required.

Related Services

Lambda / O2 SoftwareDownpipesStage 2 RemappingDPF Delete & Removal

Support Doesn't End When Your Remap Is Complete

  • Eligible software warranty. Eligible STX Tuning software work carries a lifetime software warranty. It applies to the software work itself, as set out in the warranty terms; it is not cover for mechanical parts or other work.
  • Asking for help. Call or message us with your registration and what you've noticed. We'll arrange to check the vehicle.
  • How issues are assessed. We read the vehicle and check whether the concern relates to our software or something else, such as a fault or worn part.
  • Manufacturer updates. A dealer software update can overwrite a remap. Tell us if your vehicle has been updated and we'll advise on the next step.
  • Additional work. Diagnostics, repairs or new software work not covered by the warranty are quoted before anything is done.
Read the warranty termsContact STX Tuning

Discuss My Vehicle

Send your vehicle details, exact request, fitted or proposed hardware and intended use. STX Tuning reviews the scope and confirms whether a quotation can be offered.

01753 439130

Get Your Personalised Tuning Quote

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

Add this service to my tuning package
Your vehicle
What do you need?

1 service selected: OPF / GPF Delete & Removal

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

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