From factory-locked to Stage 1 — one complete S58 performance package.

Unlock the performance potential of your BMW S58 with the Gridline Custom Motorsports S58 ECU Unlock + MHD Stage 1 Performance Package.

Developed for BMW's latest generation of S58-powered M vehicles, this complete package combines our Same-Day In-House ECU Unlock Service, a genuine MHD Super Licence, and professional MHD Stage 1 performance tuning and setup into one complete solution.

Many late-model S58-powered BMWs are equipped with factory DME software protection that prevents conventional OBD flash tuning. Gridline removes these restrictions in-house at our Gold Coast workshop, before professionally installing and configuring the MHD tuning platform and the appropriate Stage 1 OTS performance map for your vehicle.

The result is a properly integrated performance package designed to deliver increased power and torque, sharper throttle response, stronger acceleration and improved overall performance, while retaining the sophisticated factory safety strategies and engine protection built into the BMW S58 platform.

No overseas ECU shipping.
No third-party ECU handling.
No separate tuning licence to organise.
One workshop. One complete S58 performance solution.

What's Included

Every S58 ECU Unlock + MHD Stage 1 Performance Package includes:

✓ Gridline Customs Same-Day S58 ECU Unlock

✓ ECU Removal & Reinstallation

✓ Genuine MHD Super Licence

✓ MHD Stage 1 OTS Performance Map

✓ Professional MHD Installation & Configuration

✓ Vehicle Compatibility & DME Assessment

✓ Final Vehicle System Checks

✓ Technical Support & Performance Advice

From the moment your BMW arrives at Gridline, the entire process is professionally managed by our team.

Gridline Same-Day S58 ECU Unlock

Modern BMW S58 DMEs feature factory software protection that must be removed before OBD flash tuning can be performed.

Unlike services that require your ECU to be shipped overseas or handled by external providers, Gridline Custom Motorsports performs the ECU unlock completely in-house at our Gold Coast workshop.

Our technicians remove the ECU, complete the professional unlock procedure, reinstall the ECU and perform the necessary system checks before moving directly into the MHD tuning process.

For most eligible vehicles, the entire process can be completed on the same day, subject to vehicle compatibility and booking availability.

Genuine MHD Super Licence

Your package includes a genuine MHD Super Licence, providing access to MHD's complete S58 tuning ecosystem.

The MHD Super Licence combines:

• MHD Flasher Licence
• MHD Monitor Licence
• MHD Off-The-Shelf Performance Maps
• MHD+ Performance Features

Beyond your initial Stage 1 setup, the MHD platform provides the foundation for future performance upgrades and more advanced tuning configurations as your vehicle evolves.

Depending on vehicle configuration and supporting hardware, MHD features can include map switching, data logging, live engine monitoring, configurable exhaust settings, ethanol integration and other advanced performance functions.

MHD Stage 1 Performance Tuning

The BMW S58 responds exceptionally well to performance calibration.

Your package includes professional installation and configuration of the appropriate MHD Stage 1 OTS Performance Map for your vehicle and fuel configuration.

Stage 1 is designed for vehicles running factory or otherwise compatible hardware and can provide significant improvements in:

• Power delivery
• Torque
• Throttle response
• Mid-range performance
• Acceleration
• Overall engine response and drivability

The appropriate calibration will be selected according to your individual vehicle, available fuel and configuration.

Performance gains vary between vehicles, models, fuel types, software versions and operating conditions. Individual power and torque figures are not guaranteed unless specifically quoted for your vehicle.

Supported BMW S58 Models

This performance package is available for eligible S58-powered BMW M vehicles, including:

• BMW G87 M2
• BMW G80 M3
• BMW G81 M3 Touring
• BMW G82 M4
• BMW G83 M4 Convertible
• BMW F97 X3 M
• BMW F98 X4 M

Other S58-powered BMW variants may also be supported.

Not sure whether your BMW is compatible?

Contact the Gridline team before purchasing and we'll confirm compatibility for your vehicle.

CS & CSL Models

BMW CS and CSL models feature specialised factory calibrations and higher factory performance levels compared with their standard M counterparts.

Vehicles including the M2 CS, M3 CS, M4 CS and M4 CSL require individual assessment rather than being treated as a standard Stage 1 package.

If you own a CS or CSL model, please contact Gridline Custom Motorsports and we'll recommend the appropriate performance solution for your vehicle.

Same-Day Workshop Service

For most eligible vehicles, the ECU unlock and Stage 1 setup can be completed during a single workshop visit.

The process generally includes:

• Initial vehicle and DME compatibility assessment
• ECU removal
• In-house ECU unlock
• ECU reinstallation
• MHD Super Licence activation
• MHD software configuration
• Stage 1 OTS map installation
• Final system checks

Bookings are essential and same-day completion is subject to vehicle compatibility and workshop availability.

More Than a Tune

This isn't simply an ECU flash.

It's a complete performance solution designed to take your S58-powered BMW from a factory-protected DME to a professionally configured Stage 1 performance vehicle — without having to organise multiple products, licences or providers.

Whether your BMW is a daily-driven M2, an M3 or M4 weekend car, an M3 Touring or a high-performance X3 M or X4 M, the package also provides a platform capable of supporting the next stage of your build.

One workshop. One complete solution.

Built. Tested. Driven.

Why Choose Gridline Custom Motorsports?

BMW performance is what we do.

Our team specialises in modern BMW performance platforms and understands the sophisticated engine management systems found in today's S58-powered M vehicles.

When you choose Gridline, your vehicle remains under our control throughout the entire process.

✔ ECU Unlock Performed In-House
✔ No Overseas ECU Shipping
✔ No Third-Party ECU Processing
✔ Genuine MHD Software
✔ Professional Installation & Configuration
✔ BMW Performance Specialists
✔ Technical Support Before & After Installation
✔ Gold Coast Workshop
✔ Complete ECU Unlock-to-Stage-1 Solution

From ECU removal and unlocking through to MHD activation, calibration and final checks, every stage is managed by Gridline Custom Motorsports.

Important Information

• Package is available for eligible BMW S58-powered vehicles only.
• Vehicle and DME compatibility must be confirmed before work commences.
• Same-day completion is subject to booking availability and vehicle compatibility.
• Package includes a genuine MHD Super Licence and applicable MHD Stage 1 OTS map.
• Performance results vary according to vehicle model, condition, fuel quality, software version, modifications and environmental conditions.
• Additional hardware, maintenance or repairs required to make a vehicle suitable for tuning are not included.
• CS, CSL and other specialised variants require individual assessment.
• MHD software licences are non-refundable once activated.
• ECU unlocking and tuning services are non-refundable once completed.
• Future BMW dealership software updates may overwrite or otherwise affect ECU software or unlock status. Please contact Gridline before allowing major dealership software programming where possible.

Tuning Disclaimer

Performance tuning and ECU-related modifications may affect manufacturer warranties, emissions compliance, noise compliance and other vehicle regulatory requirements.

Customers are responsible for ensuring that their vehicle and its intended use comply with all applicable laws and regulations.

Performance figures and gains vary according to vehicle specification, condition, fuel, supporting modifications and environmental conditions and should not be interpreted as guaranteed results unless specifically stated for an individual vehicle.

Ready to Unlock Your S58?

Take your BMW beyond factory performance with the Gridline Custom Motorsports S58 ECU Unlock + MHD Stage 1 Performance Package.

From the initial ECU unlock to MHD activation and Stage 1 setup, we'll take care of the entire process at our Gold Coast workshop.

Contact the Gridline team to confirm compatibility or book your S58 performance package.

PERFORMANCE WITHOUT LIMITS.