BMW G80,G81,G82,G83 M3/M4 Tuning 

Currently we are unable to unlock the S58 DME in house and we send them away prior to tuning.

The process involves sending the ECU via a secure courier away and typically the unlocking process takes 10-14 days to complete. We offer three options for unlocking your ECU:

1. SEND

You can send us your ECU for unlocking. If you have the space to store your car then we send you instructions for removing the ECU (around 10mins work). You can then deliver the ECU to us and we’ll handle the FEMTO unlock process.

2. DELIVER

Your G-series M3/M4 can be delivered to us and you can borrow one of our free courtesy cars while we handle the tuning process.

3. COLLECT

We also have the option of paid collecting and redelivering your car using our transporter.

We have invested in our own BMW G-Series M3 to develop our ECU calibration options and hardware upgrades. Our proven calibrations provides not only a huge increase performance but also a number of features to further enhance the car.

We have fine-tuned the calibration on both on our in-house Dyno as well as living with the setup day to day on the road with our development cars. The power is instantly adjustable with the BMW Drive selection modes so you can quickly tailor the delivery to the environmental conditions. Even with the OPF filters and standard exhaust in place we are able to release a massive 120bhp extra with our custom Stage1 tune.

Tuning Options

We offer 2 different options of tuning:

:

• Single Map – Our bespoke dyno tuning with single map (non switchable) from Stage 1 to Stage 3
• Switchable maps – Multiple map tuning with switchable maps using BM3 Custom Rom Tuning

Single Map Tuning Guide

Our default Map Slot settings which you can change instantly using the Cruise Control buttons are:

• Stage 1 – 600-620 BHP / 740 -760 Nm – Stock Hardware
• Stage 2 –680 – 700 BHP / 850-900 Nm- Downpipes, Exhaust system & Intake/ Panel Filters
• Stage 3 – 790-800 BHP / 980- 1000 Nm – Stage 2 Hardware + Hybrid Turbos & Coolers

  Based upon 99 Ron Pump Fuel – Tuning Packages Available 

Switchable maps – Stage 1

Our default Map Slot settings which you can change instantly using the Cruise Control buttons are:

• Map 1 – Stock CSL tune 542bhp / 479bhp
• Map 2 – AR 95 Octane normal unleaded fuel which will produce around 590 bhp and 720Nm (Stage 1)
• Map 3 – AR 97/99 Octane Super unleaded fuel which will produce around 600-620 bhp with over 740 Nm (Stage 1)
• Map 4 – Valet Mode

Switchable maps – Stage 2

Our default Map Slot settings which you can change instantly using the Cruise Control buttons are:

• Map 1 – Stock CSL tune 542bhp / 479bhp
• Map 2 – Low Boost 99 Ron 590-600 bhp / 720Nm
• Map 3 – 99 Ron 680 – 700 BHP / 850-900 Nm- Downpipes, Exhaust system & Intake/ Panel Filters
• Map 4 – Valet Mode

Switchable maps – Stage 3

Our default Map Slot settings which you can change instantly using the Cruise Control buttons are:

• Map 1 – Low Boost 99 Ron 590-600 bhp / 720Nm 
• Map 2 – Medium Boost 650 bhp / 760 Nm
• Map 3 – 99 Ron 790-800 BHP / 980- 1000 Nm – Stage 2 Hardware + Hybrid Turbos & Coolers
• Map 4 – Valet Mode

  All figures are a guide and maps can be adjusted to suit your requirements 

The driver is able to switch between the different maps using the Cruise Control buttons or selecting a new map slot within the BM3 App.

• Recalibrated Driver Display – All our remaps include recalibrating the Driver Display to show the engines new power and torque figures.
• Vmax Removed – All our remaps include removing the top speed limiter so drivers can choose to driver over 155mph on de-restricted Motorways or on track events.
• Custom Exhaust Valve Control – All our remaps include adjusting the exhaust valve to give a better exhaust note and reduce drone when cruising. Especially useful for cars with performance exhaust or downpipes.
• Optional Cold Start Removal – We can simply remove the Cold Start process that causes the engine/exhaust make a loud unpleasant noise while the ECU tries to warm up the CATs for emissions. This can become extremely loud on cars with no CATs installed.
• Optional Pops & Bangs/Burbles Adjustment – Tailor the amount of burbles produced on the over run. Change between OEM or custom levels using the phone app or turn off completely. All our remaps have the burble setup similar to the CSL/CS models so it gives a nice sound when in Sports mode.
• Adjustable Torque Per Gear – Requires Bluetooth Interface and Phone App. Within the Phone App the driver is able to easily adjust the amount of torque going to the wheels using a simple slider. We have setup a good default setting for the first 3 gears but now the driver can request more or less torque in 1st, 2nd, 3rd and 4th onwards. This is ideal if you are on a slippery surface, have gripper tyres as few quick changes can really improve the traction and enjoyment of the car.

Flex Fuel 

 Custom tuning can also be added using the BM3 Flex Fuel controller enabling you to run race fuel ethanol blends – E30/E40 etc

Example power with flex fuel 

• Stage 2 – Stock Turbos – 750 BHP / 950-980 Nm
• Stage 3 – Hybrid Turbos – 900 BHP / 1050-1100 NM
• Usually added to Map 4 Slot 

Pricing