GX Autosport

01/04/2026

Big news for GX Autosport! 🔥

After months of development. We are proud to announce the world’s first Bluetooth Turbo Conversion Kit – no tools, no fitting, no hassle.

Simply plug it into your OBD port and connect via app… and instantly gain:
• up to 600bhp (wireless)
• Faster spool via 5G boost technology
• Adjustable pops & bangs from your phone
• “Eco Mode” for MOT day
• Compatible with ALL vehicles (even non-turbo)

🔥 No installation required. Just vibes.
🔥 Available from today only…
🔥 Full package £999 inc vat and shipping

Limited stock – once it’s gone, it’s gone…

08/08/2025

NEW mhd tuning update:

UPDATE to B58O1 maps (boost control and timing adjustments. We also updated S63 F9x maps (load limiters, boost control)

A torque limiter was fixed on 45e hybrid cars preventing the hybrid boost to kick in fully.

To get latest maps and bug fixes simply update app and flash again.

Full range of mhd products
https://www.just-performance.co.uk/ecu-remaps/mhd-tuning/mhd-tuning-super-license

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♦️ v5.06 ♦️
✓ Updated Gen2 B58 O1 OTS maps: improved boost control (all maps), more timing and load for the 95oct & e40 maps.
✓ Updated S63 F9x OTS maps: adjusted load limiters, improved boost control.
✓ Fixed a torque limiter issue with hybrid (PHEV) B58tu M1 engines (45e vehicles).
✓ Generate update bin now also exports the corresponding prefilled mapswitch base file.
✓ Fixed missing TCU logging channels on some vehicles.
✓ Fixed various app bugs / crashes.
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MHD+ S58 & B58: Real Time Tuning - Advanced TCU & DME logging - On The Fly Map Switching - On The Fly Exhaust Flap Control - Anti Lag - Flex Fuel - KnockCEL - No Lift Shift - Overrun Brap - Single Bank - Full Motiv ReFlex 2 Way CANBUS integration with DME PI control - Advanced Safeties and custom Boost Control - Quickest Flash Times - Most Advanced B58 & S58 Tuning and Logging Solution
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24/07/2025

Another exciting update from mhd tuning, now supports data logging for the BMW 8HP Transmission. At this time all Gen2 B58 and S58 vehicles are supported. Gen1 B58 and more will follow shortly.

Why is this important? In the quest for breaking records on the track, the need for transmission data logging has become very apparent. Our new 8HP datalogging allows maximum effort cars to see individual clutch states, clutch solenoid currents (which can then be translated to pressure), torque converter slip %, clutch slip % and much more. This data is critical for determining if there’s a physical vs. transmission tune related issue occuring and provides powerful insights on how to go even faster. TCU data logging works in parallel with DME logging.

Enjoy the update & stay tuned for more!

Check out full range of mhd superlicense here

https://www.just-performance.co.uk/ecu-remaps/mhd-tuning/mhd-tuning-super-license

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♦️ v5.05 ♦️
✓ Added TCU logging for Gen2 B58 and S58 vehicles.
✓ Added sport cooling flash option for Gen2 B58 and S58.
✓ Added MHD+ support for more new ROMs.
✓ Added support for Gen1 B58 European F2x m240i with post 6.2020 DMEs (No MHD+).
✓ Fixed various app bugs / crashes.
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MHD+ S58 & B58: Real Time Tuning - Advanced TCU & DME logging - On The Fly Map Switching - On The Fly Exhaust Flap Control - Anti Lag - Flex Fuel - KnockCEL - No Lift Shift - Overrun Brap - Single Bank - Full Motiv ReFlex 2 Way CANBUS integration with DME PI control - Advanced Safeties and custom Boost Control - Quickest Flash Times - Most Advanced B58 & S58 Tuning and Logging Solution
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06/09/2024

06/09/2024

MHD F+G Series Update V4.75 💻📊

Todays update brings a big enhancement to our market leading MHD+ Real Time Tuning feature for S58 and B58 Gen2 cars, it now allows ALL DME tables to be modified on the fly while tuning the car without reflashing.

We also updated the linear throttle flash option for N55 F series cars and included the M2 N55

We Added a flash option for all B58 cars equipped with the active air flaps to stay open all the time to improve air flow and temperatures

We now offer a S58 injector flash option for all B58GEN2 cars.

And many more things - enjoy!
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♦️ v4.75 ♦️

✓ Updated Real-time Tuning for MHD+ Gen2 B58 and S58 vehicles to include *ALL* DME tables.
✓ Updated Linear Throttle flash option for F-Series N55 vehicles (and now available for M2 N55).
✓ Added „Radiator shutter flaps always open“ flash option for all B58 vehicles.
✓ Added S58 Injectors flash option for Gen2 B58 vehicles.
✓ Fixed MHD+ custom boost control issue when in vacuum operation on all B58 / S58 vehicles.
✓ Fixed MHD+ ReFlex Aux control issue when in vacuum operation on Gen2 B58 and S58.
✓ Updated NXM PI conversion (DI delete) on N54 vehicles (various enhancements).
✓ More vehicles / roms supported.
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01/05/2024

Customer: I’d like the exhaust to poke out please

Exhaust shop: I got you covered 👍

14/12/2023

With Christmas fast approaching we would like to inform you of our opening times for our office over the festive period.

December 20th 2023 - CLOSED
December 21st 2023 - CLOSED
December 22nd 2023 - CLOSED
December 23rd 2023 - CLOSED
December 24th 2023 - CLOSED
December 25th 2023 - CLOSED
December 26th 2023 - CLOSED
December 27th 2023 - CLOSED
December 28th 2023 - CLOSED
December 29th 2023 - CLOSED
December 30th 2023 - CLOSED
December 31st 2023 - CLOSED
January 1st 2024 - CLOSED
January 2nd 2024 - Normal Business Hours

During these times, our offices will remain closed with limited email and social media platform access for us to enjoy a much deserved break and spend time with our families.

The website remains accessible 24/7 and all orders placed during the festive shutdown period will be processed upon return on the 2nd January 2024.

Thank you all for a fantastic year of business, and hope you all have a great Christmas and a Happy New Year.

03/01/2023

Sad news :(

12/12/2022

Christmas is just around the corner, we would like to let everyone know that we are going to be closing on: THURSDAY 22nd DECEMBER 2022 until WEDNESDAY 4TH JANUARY 2023.

We want to thank you for your continued custom and support throughout the year and would like to wish you all a wonderful holiday season.

15/09/2022

As a mark of respect for the life of service and leadership of Her Majesty Queen Elizabeth II, we have decided to close all day on Monday 19 September to coincide with Her Majesty Queen Elizabeth II’s State Funeral and mark the last day of the period of national mourning. We will reopen on 20 September as usual.

08/09/2022

Everyone at Gx Autosport is extremely saddened and shocked by the passing of Her Majesty the Queen Elizabeth II. 70 years of public service leaves us with an enormous debt of gratitude.

Our thoughts and prayers are with the Royal Family. 🇬🇧 😢

Rest in peace