Just Performance

01/04/2026

Big news for b58 owners!

We are now offering high performance B58 High Performance Cold Air Intake systems

Designed to extract maximum power from the factory setup with zero additional modifications required.
• High Velocity Carbon Fibre Intake System
• CNC Machined Velocity Stacks
• Dual High Flow Performance Filters
• Titanium Heat Shielding
• Advanced Airflow Optimisation Design
• Direct Bolt-On Installation

Capable of 1000bhp+ with NO remap required

Tested on multiple B58 platforms with consistent results.

OEM drivability maintained with significant performance gains.

For enquiries, please don’t hesitate to contact us.

📞 DM us directly
🌐 www.just-performance.co.uk

Limited availability

01/12/2025

🎄 Merry Christmas from Just Performance! 🎄

It’s been another great year supporting your builds — from simple upgrades to full performance transformations. Thank you for keeping us busy and for choosing us for your parts, tuning gear, and everything in between. 🚗✨

We’re taking a slightly longer break this year to reset and come back ready for an even stronger 2026.

📅 Christmas Schedule
👉 Last posting date: Friday 20th December (closing at 5pm, subject to availability)
👉 We will be closed from Saturday 21st December
👉 Back open on Monday 6th January 2026

Orders can still be placed throughout the holiday period and will be processed once we return.

Thank you again for your support throughout 2025.
Wishing you a Merry Christmas and a Happy New Year from everyone at Just Performance! 🎅🔧✨

23/10/2025

Pop and bang map on aggressive setting. £FREE

25/09/2025

Sad truth 🤣

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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28/07/2025

Massive Nürburgring Pile-Up 27 July 2025 Crash

24/07/2025

Another exciting update from mhd tuning - now supports data logging on the bmw 8hp transmissions!😍 a big step forward in the tuning world!

19/07/2025