STX Tuning

Specialist ECU software · Vehicle modifications · Slough

OTHER SPECIALIST ECU & VEHICLE SERVICES IN SLOUGH

Tell STX Tuning your vehicle and the specialist ECU or modification work you need.

4.9/5500+ Google ReviewsSee Google Reviews

Slough workshop · Berkshire · SL3 7EW

Representative automotive imagery, not a photograph of completed specialist work or the STX Tuning workshop.

One vehicle. One complete request.

Tell us what service you need.

Build your specialist enquiry

Enter your registration, choose the software or modification you are interested in and tell us about the job. We will check the available service and quote for your exact vehicle.

Your vehicle
Select manufacturer, model, generation and engine

1 / 3 · Choose your specialist service

Which specialist service are you enquiring about?

Check service availability. Several requests can be reviewed together in one enquiry; none is automatically approved.

Your details

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

  • 4.9/5 Google rating · 535 reviews
  • Slough workshop
  • Vehicle-specific quotes

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Real ECU software enquiries. A real workshop. Direct contact.

Vehicle-specific requests

Start with the exact engine and ECU.

Specialist software

Ask about a modification beyond a standard remap.

Slough workshop

Discuss suitable workshop appointments.

Genuine Google Reviews

Read real STX Tuning customer feedback.

STX Tuning is an automotive ECU remapping and performance modification business based in Slough, Berkshire. In addition to its main tuning and hardware services, customers can enquire about selected specialist ECU software, fault-code calibration requests, lambda/O2 software, speed limiter settings and other vehicle-specific modifications. Service availability depends on the exact vehicle and intended application.

Explore our additional specialist services.

From individual ECU software requests to specialist exhaust hardware, different vehicles have different options.

Choose a service below to see what the enquiry involves.

01

Custom ECU Software

Tell us what ECU function or calibration requirement you are interested in so compatibility can be checked.

Check service availability

02

DTC / Fault-Code Software Enquiry

Send the exact code, vehicle and requested software work so the appropriate enquiry can be reviewed.

Check service availability

03

Lambda / O2 ECU Software

Discuss supported lambda or catalyst-monitoring software requirements for a suitable specialist application.

Check service availability

04

OPF / GPF Specialist Enquiry

Check whether a relevant specialist ECU or hardware service can be considered for your exact petrol vehicle.

Check service availability

05

Speed Limiter Calibration

Send the exact vehicle and required application so available calibration options can be reviewed.

Check service availability

06

Controlled Mileage-Testing Equipment

Ask about mileage-measurement testing equipment for a legitimate controlled testing or research application.

Check service availability

07

Resonator / Exhaust Modification

Explore suitable resonator, mid-pipe and vehicle-specific exhaust modification enquiries.

Check service availability

08

Something Else / Not Sure

Tell us the work you are looking for and we will check whether the relevant specialist service is offered.

Check service availability

HAVE A CUSTOM ECU SOFTWARE REQUEST?

Not every ECU modification is a straightforward Stage 1 or Stage 2 remap.

Different engines and control units can have additional software functions or individual calibration requirements.

If you're enquiring about a specific ECU feature, tell STX Tuning what vehicle you have, what software is currently installed and what you're hoping to achieve.

We can help review whether the requested work is supported and appropriate for the actual application.

Exact ECU

Identify the engine and ECU where possible.

Existing software

Tell us about previous remapping.

Requested function

Describe the specific change.

Supporting hardware

Provide existing modification details.

Explore custom ECU tuning
Representative ECU electronics
Illustrative ECU electronics, not evidence of a supported service or completed STX Tuning job.

DTC SOFTWARE & VEHICLE-SPECIFIC FAULT-CODE ENQUIRIES.

DTC stands for Diagnostic Trouble Code.

Modern vehicles use fault codes to report different monitored conditions.

Some specialist ECU software enquiries involve the way a particular function is monitored within a supported calibration.

The meaning and cause of the code must be understood before deciding whether a software modification is appropriate.

Send STX Tuning the exact fault code, vehicle and requested work so the enquiry can be reviewed.

A software change does not physically repair a failed sensor, electrical circuit or mechanical part. Indiscriminate and safety-critical warning suppression is not offered.

LAMBDA / O2 SENSOR ECU SOFTWARE ENQUIRIES.

Petrol engines use oxygen sensors, often called lambda sensors, to monitor aspects of the exhaust and engine control system.

Different vehicles use sensors before and after the catalytic converter, and the functions of those sensors can differ.

Certain specialist ECU software requests relate to lambda or catalyst-monitoring functions on suitable motorsport applications.

The actual ECU, existing exhaust hardware and requested work must be checked before a quotation can be confirmed.

Upstream and downstream sensors can have different functions. A catalyst code does not prove one failed part; public-road emissions bypass is not approved.

OPF / GPF SOFTWARE & HARDWARE ENQUIRIES.

Some modern petrol vehicles use a petrol particulate filter, commonly called GPF or OPF.

The design and related ECU monitoring vary between manufacturers and engine generations.

Certain specialist motorsport applications may involve enquiries about petrol particulate-filter-related software or exhaust hardware.

The correct vehicle, ECU and existing exhaust configuration need to be established before any suitable service can be considered.

Applicable petrol vehicle, original filter arrangement, exhaust and eligible specialist non-road use must be established. No automatic power or warning-light guarantees.

VEHICLE SPEED LIMITER SOFTWARE ENQUIRIES.

Some vehicles have manufacturer-configured speed-limiter settings.

The software and permitted adjustments vary between vehicle types, ECU systems and intended applications.

STX Tuning can review suitable speed-limiter calibration enquiries where the requested work is supported and appropriate.

Send the exact vehicle, existing limiter information and intended application so the available service can be checked.

Manufacturer settings, mechanical limits, safety requirements and intended application are checked. No unrestricted public-road speed promises.

SPECIALIST MILEAGE TESTING EQUIPMENT ENQUIRIES.

Some controlled research, workshop and off-road testing applications use specialist equipment associated with vehicle mileage measurement or instrument-system testing.

Compatibility and permitted use depend on the exact vehicle and intended application.

If you have a legitimate specialist testing requirement, send STX Tuning the vehicle details and explain the purpose so the available equipment and service can be reviewed.

Legitimate controlled testing, research and specialist off-road applications only. No mileage concealment, misleading vehicle history, finance or lease mileage avoidance. Equipment and service availability need confirmation.

RESONATOR & SPECIALIST EXHAUST MODIFICATION ENQUIRIES.

Looking to change the exhaust hardware or sound characteristics of your car?

STX Tuning can review suitable exhaust modification enquiries, including relevant resonator work and performance exhaust components.

The correct parts and installation depend on the actual vehicle and existing exhaust arrangement.

Tell us what you drive and the sound or hardware change you're interested in.

CAN'T FIND THE ECU OR MODIFICATION SERVICE YOU NEED?

Some specialist vehicle requests don't match a standard service name.

If you already know what you're looking for, send us the vehicle and the technical details.

If you're unsure what the modification is called, explain what you're trying to achieve.

We'll review whether the request falls within the current STX Tuning service offering and whether the required work is suitable for the vehicle.

HAVE A FAULT CODE OR A SPECIFIC ECU REQUEST?

If you're enquiring about a particular ECU software function or code, include the details so the correct specialist service can be identified.

A fault code describes a detected condition, not necessarily the component that has failed.

P0420

Catalyst system efficiency below threshold, bank 1

P0430

Catalyst system efficiency below threshold, bank 2

P2015

Intake manifold runner position sensor/switch circuit range/performance, bank 1

P0401

Exhaust gas recirculation flow insufficient detected

P2201

NOx sensor circuit range/performance, bank 1

P20E8

Reductant pressure too low

A code describes a monitored condition, not a diagnosis. Unrecognised codes can be included in a DTC or bespoke enquiry without an invented result.

FIND YOUR VEHICLE & CHECK THE SERVICE.

Specialist ECU software and hardware modifications vary between makes, models, engines and control units.

Choose your exact vehicle so the relevant service enquiry can be reviewed.

Can't find your car or engine?

Send the registration, make, model and engine details so STX Tuning can review your request.

Choose your exact vehicle

ECU compatibility to be confirmed · Hardware support to be confirmed · Price on request

Stage 1/2 tuning records do not confirm support for DTC, lambda, OPF/GPF, limiter settings, test modules or physical exhaust work.

SPECIALIST ECU & MODIFICATION ENQUIRIES FOR CARS AND VANS.

Different vehicles have different ECU software and hardware options.

Whether you have a petrol performance car, diesel van or a more specialised vehicle project, the correct engine and intended service matter.

Send us the details and we'll check whether the work is within the STX Tuning service offering.

ECU SOFTWARE OR PHYSICAL HARDWARE , WHAT DO YOU NEED?

Some specialist modifications are carried out through ECU software.

Others require physical components or workshop fitting.

In certain projects both types of work may need consideration.

Tell us the exact service you want so the quotation covers the appropriate work.

ECU software

Vehicle-specific calibration and control-function enquiries. Existing software, requested function and intended application matter.

Physical hardware

Suitable exhaust work, resonator modifications or legitimate test equipment. Parts and fitting are checked separately.

VISIT STX TUNING IN SLOUGH OR ASK ABOUT MOBILE SOFTWARE.

Some specialist ECU software procedures may be suitable for a mobile appointment.

Physical hardware modifications and more involved vehicle work are generally discussed for the workshop.

The correct arrangement depends on the actual service, vehicle and available technician capability.

Physical work is workshop-led. Unknown postcode or ECU support means mobile availability to be confirmed, not an automatic appointment.

GET YOUR SPECIALIST SERVICE QUOTE IN FOUR SIMPLE STEPS.

  1. 01

    Select your vehicle

    Registration or exact engine.

  2. 02

    Choose the service

    Specialist ECU or hardware request.

  3. 03

    Send the details

    Codes, current software and intended application.

  4. 04

    Confirm the quotation

    Available service, price and appointment reviewed.

BUILD YOUR SPECIALIST ECU OR MODIFICATION ENQUIRY.

Select your car, choose the requested work and add any information that helps explain the job.

Review the details and send the complete enquiry to STX Tuning through WhatsApp.

Vehicle
Add your vehicle
Requested services
Custom ECU Software
Type of work
Not sure
Existing ECU software
Not sure
ECU / part details
Not supplied
Fault codes
Not supplied
Current modifications
Not supplied
Requested outcome
Add the work you need
Intended application
To be discussed
Appointment
Need Advice
Postcode
Not supplied
Preferred timing
Flexible
Service availability
Check service availability
ECU compatibility
Compatibility to be confirmed
Hardware support
To be confirmed
Software
Price on request
Parts
Price on request
Fitting
Price on request
Mobile charge
To be confirmed
Complete quotation
Complete quote required

HOW MUCH DOES A SPECIALIST ECU OR VEHICLE MODIFICATION COST?

Specialist ECU software and hardware requests vary by vehicle and the work involved.

A small supported software modification can have different requirements from a more involved physical hardware job.

The exact ECU, existing modifications and application need to be checked before a complete price can be confirmed.

Send STX Tuning your registration and requested work for a quotation.

Software, hardware and fitting: price on request. Complete quote required. No assumed bundle total, discounts or charges for missing prices.

EXPLORE THE FULL STX TUNING SERVICE RANGE.

Looking for a service with its own dedicated page?

Explore the relevant STX Tuning category below and check the available options for your vehicle.

WHY ASK STX TUNING ABOUT YOUR SPECIALIST MODIFICATION?

Specialist ECU and vehicle modification requests aren't always straightforward.

The available work can depend on the exact engine, ECU, hardware and intended application.

STX Tuning has a physical workshop in Slough, direct telephone and WhatsApp contact, and a wider range of dedicated ECU tuning and performance services.

You can send us the details of your enquiry and check genuine Google customer reviews before arranging any work.

Real Slough workshop

Contact STX Tuning before travelling.

Vehicle-specific enquiries

Exact engine, ECU and requested work.

Clear service scope

Understand what is quoted before booking.

Genuine Google Reviews

Read real customer feedback.

Google Customer Reviews

Read our real Google Reviews.

See what customers say about their experience with STX Tuning.

Google Reviews

4.9

535 Google Reviews

  • Loizos Kyriacou

    Jun 2025

    Went to remap my GLE 250d and the whole process was smooth from start to finish. Super responsive, and had the job done quickly with zero hassle. The results are brilliant , noticeable power gains straight away and smoother drive overall. Would highly recommend them to anyone looking for a quality remap with excellent customer service!

    Posted on Google · view on our Google profile
  • Debby Cunliffe

    Jun 2025

    Fantastic service. Came to my home on a Sunday to remap my car. Great job done and lifetime warranty plus interest free payment facility over 4 months available. Highly recommend

    Posted on Google · view on our Google profile
  • Daniel Sullivan

    Jan 2025

    Highly recommended service. The team at STX are very accommodating and professional. Had a remap on my Audi which was turned around in a day. Running perfectly. I will definitely be back for additional work in the near future.

    Posted on Google · view on our Google profile
  • Stephen Hall

    Jan 2025

    Great and quick service, sorted my emissions error out on my car , "Really happy with the remap done on my car, polite, efficient service and would highly recommended"

    Posted on Google · view on our Google profile
  • Tony Thorpe

    Dec 2024

    STX tuning really looked after me and my van, explained the process and carried out work without any fuss whatsoever! Van has been perfect since. Would definitely recommend to anyone to use! Keep up the good work guys!

    Posted on Google · view on our Google profile
  • ಠ_ಠ

    Nov 2024

    Honestly well happy with the stage 1 re map, was worried if I would even feel a power difference from 125-151bhp but I can assure you it’s a difference, aswell as a good high change in torque. It took about 30 minutes, brilliant service, and dome good tips on how to take care of my car after ⭐️⭐️⭐️⭐️⭐️

    Posted on Google · view on our Google profile

STRAIGHT FROM THE STX TUNING WORKSHOP.

Before booking specialist vehicle work, it's worth knowing who you're dealing with.

STX Tuning is based in Slough, Berkshire, with direct telephone and WhatsApp contact.

Explore genuine workshop images and get in touch with your vehicle details.

SPECIALIST ECU SOFTWARE & VEHICLE MODIFICATIONS IN SLOUGH, BERKSHIRE.

STX Tuning is based at Deseronto Trading Estate in Slough, Berkshire.

In addition to our main ECU remapping and performance upgrade services, customers can enquire about selected specialist ECU software, vehicle-specific calibration requests and additional modification work.

Whether you're considering a lambda/O2 software enquiry, speed limiter calibration, specialist exhaust work or another technical request, send us your vehicle details so the appropriate service can be checked.

We welcome enquiries from Slough, Windsor, Maidenhead, Langley, Heathrow, West Drayton, Uxbridge, Hayes, Southall, Staines, Bracknell, Reading, High Wycombe and nearby areas.

Contact STX Tuning before travelling so the service, price and appointment arrangements can be confirmed.

STX Tuning
Deseronto Trading Estate, Slough, Berkshire, SL3 7EW

Get directions to STX TuningCall 01753 439130

Specialist ECU & vehicle services: your questions answered

What other services does STX Tuning offer?

STX Tuning accepts enquiries for selected specialist ECU software, vehicle-specific calibration requests, relevant exhaust modifications and other technical work beyond standard ECU remapping. Availability depends on the exact vehicle and service.

Can I request custom ECU software that isn't listed?

Yes. Send the vehicle registration and describe the requested software function so STX Tuning can review whether the service is supported.

Does STX Tuning offer specialist fault-code software?

STX Tuning can review specific DTC-related ECU software enquiries for suitable applications. A fault code alone does not prove that a software change is the correct solution.

What is a DTC?

DTC stands for Diagnostic Trouble Code. It is used by a vehicle control system to report a detected fault or monitored condition.

Can ECU software fix every fault code?

No. Fault codes can relate to mechanical, electrical, software or other problems. A software change is not automatically an appropriate repair.

Can you turn off every warning light?

No. STX Tuning should only consider supported and appropriate work for the actual vehicle. Warning lights can indicate issues requiring a different service.

What we do

More than just ECU remapping.

From Stage 1 and Stage 2 ECU remapping to gearbox tuning and supporting performance upgrades, STX Tuning offers specialist vehicle software and tuning services for compatible petrol and diesel cars and vans.

Explore the available options for your exact vehicle at our Slough workshop, with suitable mobile ECU remapping appointments available across selected surrounding areas.

Not sure which tuning service you need?

Tell us what you drive and what you'd like to achieve. We'll check your vehicle and help you explore the available options.

4.9/5 | 500+ Google Reviews

Have a specialist vehicle request?

Tell us what you need. Send your reg. Get your quote.

Whether you need a specialist ECU software service, lambda/O2-related enquiry, speed limiter calibration or a custom exhaust modification, STX Tuning can help check the available options for your vehicle.

Send us your registration and describe the work you're interested in.

We'll review the service, compatibility and quotation before arranging any appointment.

Call 01753 439130

STX Tuning · Deseronto Trading Estate, Slough, Berkshire, SL3 7EW