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BMW ECU Remapping & Performance Tuning

From everyday turbocharged BMW engines to high-performance M models, tuning options depend on the exact engine, ECU and drivetrain.

Explore compatible Stage 1 and Stage 2 software for your BMW, with gearbox tuning enquiries available for supported applications.

Choose your model and generation to check the information we have for your car.

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BMW 1 Series

F20/F21 · 2011-2019

BMW 135i

E82/E88 · 2007-2013

BMW 1M Coupe

E82 · 2011-2012

BMW 3 Series

G20/G21 / F30/F31 · 2019-present / 2012-2019

BMW 330d

E90/E91/E92 / F30/F31 / G20/G21 · 2008-2012 / 2012-2019 / 2019-Present

BMW 335d

E90/E91 · 2006-2012

BMW 335d xDrive

F30/F31 · 2013-2019

BMW 335i

F30/F31 / E90/E91/E92 · 2012-2015 / 2006-2013

BMW 340i

F30/F31 · 2015-2019

BMW 430d

F32/F33/F36 · 2013-2020

BMW 435d xDrive

F32/F33/F36 · 2013-2020

BMW 435i

F32/F33/F36 · 2013-2016

BMW 440i

F32/F33/F36 · 2016-2020

BMW 5 Series

G30/G31 · 2017-2024

BMW 530d

G30/G31 / F10/F11 · 2017-2023 / 2010-2017

BMW 535d

F10/F11 · 2010-2017

BMW 540d xDrive

G30/G31 · 2017-2023

BMW 540i

G30/G31 · 2017-2023

BMW 730d

G11/G12 · 2015-2022

BMW 740d xDrive

G11/G12 · 2015-2022

BMW 750d xDrive

G11/G12 · 2016-2020

BMW 840d xDrive

G14/G15/G16 · 2018-Present

BMW 840i

G14/G15/G16 · 2019-Present

BMW M135 xDrive

F70 · 2024-Present

BMW M135i

F20/F21 · 2012-2015

BMW M135i LCI

F20/F21 · 2015-2016

BMW M135i xDrive

F40 · 2019-2024

BMW M140i

F20/F21 · 2016-2019

BMW M2

F87 / G87 / G87 LCI · 2016-2018 / 2023-2024 / 2024-Present

BMW M2 Competition

F87 · 2018-2021

BMW M2 CS

F87 · 2020-2021

BMW M235i

F22/F23 · 2014-2016

BMW M240i

F22/F23 · 2016-2021

BMW M240i xDrive

G42 LCI / G42 · 2025-Present / 2021-2024

BMW M3

F80 / G80 · 2014-2016 / 2021-Present

BMW M3 Competition

F80 / G80/G81 · 2016-2018 / 2021-2024

BMW M3 Competition xDrive

G80/G81 LCI · 2024-Present

BMW M3 CS

F80 · 2018-2018

BMW M340d xDrive

G20/G21 · 2020-Present

BMW M340i xDrive

G20/G21 / G20/G21 LCI2 · 2019-2024 / 2025-Present

BMW M4

G82/G83 / F82/F83 · 2021-Present / 2014-2016

BMW M4 Competition

G82/G83 / F82/F83 · 2021-2024 / 2016-2020

BMW M4 Competition xDrive

G82/G83 LCI · 2024-Present

BMW M4 CS

F82 · 2017-2019

BMW M440i xDrive

G22/G23/G26 / G22/G23/G26 LCI · 2020-2024 / 2024-Present

BMW M5

F90 / F10 · 2018-2020 / 2011-2016

BMW M5 Competition

F10 / F90 · 2014-2016 / 2018-2023

BMW M5 CS

F90 · 2021-2022

BMW M5 Saloon

G90 · 2024-Present

BMW M5 Touring

G99 · 2024-Present

BMW M550d xDrive

F10/F11 / G30/G31 · 2012-2017 / 2017-2020

BMW M550i xDrive

G30 / G30 LCI · 2017-2020 / 2020-2023

BMW M6

F06/F12/F13 · 2012-2018

BMW M6 Competition

F06/F12/F13 · 2015-2018

BMW M8

F91/F92/F93 · 2019-Present

BMW M8 Competition

F91/F92/F93 · 2019-Present

BMW M850i xDrive

G14/G15/G16 · 2018-Present

BMW X1 M35i xDrive

U11 · 2023-Present

BMW X2 M35i xDrive

U10 · 2024-Present

BMW X3

G01 · 2017-present

BMW X3 M

F97 · 2019-2024

BMW X3 M Competition

F97 · 2019-2024

BMW X3 M40d

G01 · 2018-2024

BMW X3 M50 xDrive

G45 · 2024-Present

BMW X4 M

F98 · 2019-2024

BMW X4 M Competition

F98 · 2019-2024

BMW X4 M40d

G02 · 2018-2024

BMW X5 30d

F15 · 2013-2018

BMW X5 40d

F15 · 2013-2018

BMW X5 M

F85 · 2015-2018

BMW X5 M Competition

F95 · 2020-Present

BMW X5 M50d

G05 / F15 · 2018-2020 / 2013-2018

BMW X5 M50i

G05 · 2019-2023

BMW X5 M60i

G05 LCI · 2023-Present

BMW X6 M Competition

F96 · 2020-Present

BMW X6 M50d

G06 · 2019-2020

BMW X6 M50i

G06 · 2019-2023

BMW X6 M60i

G06 LCI · 2023-Present

BMW X7 30d

G07 · 2019-2022

BMW X7 40d

G07 LCI · 2022-Present

BMW X7 40i

G07 LCI / G07 · 2022-Present / 2019-2022

BMW X7 M50d

G07 · 2019-2020

BMW X7 M50i

G07 · 2019-2022

BMW X7 M60i

G07 LCI · 2022-Present

BMW XM Label

G09 · 2023-Present

BMW Z4 M40i

G29 · 2019-Present

Identify your BMW engine before choosing a tune

The 86 listed model families above cover the records currently in our library, not every BMW 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.

BMW gearbox considerations

Many BMW automatics use ZF eight speed gearboxes, but versions and software differ between models. We confirm the gearbox before quoting TCU work.

BMW questions

Is an M140i F20/F21 the same as an M135i F40?
No. They use different engines and drivetrains, so the calibration and figures are not interchangeable.
Can you tune the ZF gearbox on my BMW?
For supported versions, yes. Send your registration and we confirm the gearbox and software before booking.

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

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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

  • Danny

    Dec 2024

    This is a really great company. Messaged them my problem about swirl flap issues on my bmw 116d they told me the cost effective solution ( a delete kit) everything was explained clearly I knew everything that was going to happen. Once the car was In the workshop they sent me pictures of the condition of the swirl flaps and the process they was as with the vehicle. They also done a stage 1 remap on the car, there’s bad maps and there’s good maps out there and this is a really good map much more power and the delivery of that powerful is consistent and smooth. I highly recommend this company.

    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

  • 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
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