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Custom Code v6.0 has been released with App version 293! This update brings cruise control functions to Switchable Maps, Burbles and Max Cooling On-The-Fly, while the car is in motion! Custom Code v6.0 instructions will be updated with photos soon!

Custom Code v6.9 (to be released soon) allows you to use either RESUME or BC buttons to confirm your selection.

Custom Code v5.4 (outdated) allows to switch between OTS Octane and Ethanol blends map (up to E50) without the need to reflash the vehicle! Through a simple combination of the Brake Pedal, Accelerator Pedal, Traction Control Button and the Driver Select Switch you can quickly select between mapping.

Minimum/maximum OTS map version required to access Switchable Map option. Tuners should contact us about accessing Switchable Maps when using “Custom Flash Menu”.

Custom Code v6.0:

  • B48 minimum map v1.9

  • B58 minimum map v2.16

Custom Code v5.4:

  • B48 minimum map v1.8, maximum map v1.8

  • B58 minimum map v2.11, maximum map v2.15

Support is currently only for F-Series Gen 1 B48 & B58.

Support for Generation 1 G-Series will be available soon.

Infographics are available (one for Stage 1 and another for Stage 2) to help identify where you can find a given fuel type or power level. Columns are the selected file flashed to the car (identified by ACN 91, 95 RON, 98 RON, 100 RON and 102 RON) and rows are the slots you can cycle through On-The-Fly once the car is running. When the map is flashed, you can view the available slots (for the flashed file) on the MyCar page by tapping the ECU info area (MG Flasher App v277 or higher). You can also find this information in the OTS map release notes.

102 RON (95 OCT), 100 RON (94 OCT) and ACN 91 (for low quality 91 OCT / 95 RON) have been added to the list of choices when picking a file to flash. The octane level you select before flashing is the default (slot #0) map that is active after flashing. Slots 1 - 4 will contain either a lower/higher octane level, E30 or E50.

Switching Between Maps

 Custom Code v6.9

Using Cruise Control buttons

Usable while vehicle is in motion

Only available for F-Series B46, B48 and B58 vehicles using select software versions. Support for more is on the way!

  1. Hold the RESUME or BC button for 2 seconds. Check Engine Light (CEL) will flash quickly (indicating map switch selection mode is active)

  2. UP and DOWN buttons on the rocker switch will change RPM to reflect slot choice [Slot 0 to Slot 4]

  3. Select your map slot by pressing the RESUME or BC button (CEL will turn off and state will be updated)

There is a ~10 second timeout which will cancel your selection if no buttons are pressed. If the selection menu times out, the map slot will not be adjusted and no changes will be saved.

 Custom Code v6.0

Using Cruise Control buttons

Usable while vehicle is in motion

Only available for F-Series B46, B48 and B58 vehicles using select software versions. Support for more is on the way!

  1. Hold the RESUME button for 2 seconds. Check Engine Light (CEL) will flash quickly (indicating map switch selection mode is active)

  2. UP and DOWN buttons on the rocker switch will change RPM to reflect slot choice [Slot 0 to Slot 4]

  3. Select your map slot by pressing the RESUME button (CEL will turn off and state will be updated)

There is a ~10 second timeout which will cancel your selection if no buttons are pressed. If the selection menu times out, the map slot will not be adjusted and no changes will be saved.

 Custom Code v5.4

Using pedals

  1. Press the Brake Pedal 5 times consecutively within 5 seconds and then hold the Brake Pedal on the 5th press. You should notice the Check Engine Light begin to blink; this is a confirmation marker that tells you if you have performed this first step correctly. If you do not encounter a blinking Check Engine Light, then you must check the condition listed above and retry Step 1.

  2. While the Check Engine Light is blinking, fully press and hold the Gas Pedal to W.O.T (wide open throttle) position. The actual engine RPM WILL NOT rise during this procedure, so there will be no chance of over-revving the engine. The RPM gauge will immediately point to the currently saved map-set (ie. 2000 RPM = Slot #2). If no map-set was previously selected, then you will see RPM go directly to a value of 0 indicating the default map-set. Steps 1 & 2 allow the user to see the currently selected map-set.

  3. To select a new map-set, fully press and hold the Gas Pedal to W.O.T (while still pressing the Brake Pedal from Steps 1 & 2) for a period of 5 seconds or longer. The map-set will coincide with the current state of the

Driver Experience Switch and MSA Button.

  • ECO = Slot #1 (1000 RPM)

  • COMFORT = Slot #2 (2000 RPM)

  • SPORT = Slot #3 (3000 RPM)

  • SPORT+ = Slot #4 (4000 RPM)

  • SPORT or SPORT+ and 2 quick MSA presses = Slot #0 (0 RPM) (Default)

Important! when switching to Slot #0 (default) after rpm gauge switch to 0 RPM you must release gas pedal within 5 seconds , if you hold it for longer time the ecu will switch to Slot #4

In case your BMW does not have SPORT+ mode you will be limited to Slot #1, #2, #3 and reverting to Slot #0 is possible from SPORT mode by the same sequence - SPORT and 2 quick MSA presses

Within the 5 seconds of holding the Gas Pedal at W.O.T position (while still holding the Brake Pedal) you will notice the RPM on the dash will reflect the choice you have selected (ie. 3000 RPM = Slot #3).

Release the Brake and Gas Pedals fully to exit the selection process. RPM on the dash will return to actual engine RPM and the Check Engine Light will stop blinking. Now you can enjoy your newly selected map-set!

Gen 1 F-Series B48 Information

We added stock power levels to which you can immediately switch, 184 bhp or 252 bhp, depending on the car and 252 bhp.

 Expand for more info on B48 (Newest OTS maps using Custom Code v6.0)

Stage 1 - Custom Code v6.0

Stage 2 - Custom Code v6.0

 Expand for more info on B48 (Older OTS maps using Custom Code v5.4)

Stage 1 - Custom Code v5.4

Stage 2 - Custom Code v5.4

Gen 1 F-Series B58 Information

The octane level you select before flashing is the default (slot #0) map that is active after flashing. Slots 1 - 4 will contain either a lower/higher octane level, or E30. We also added additional power levels to which you can immediately switch, Stock, Stage 1+ and Stage 2.5. Stage 2.5 has been made independent of Stage 2 as of June 2021 map v2.15, more information below.

 Expand for more info on B58 (Newest OTS maps using Custom Code v6.0)

Stage 1 - Custom Code v6.0

Stage 2 - Custom Code v6.0

High Pressure Fuel Pump (HPFP) Required for Stage 2.5 (slot #2) and highly recommended for Ethanol maps (E30 slot #3)

Stage 2.5 - Custom Code v6.0

High Pressure Fuel Pump (HPFP) Required

 Expand for more info on B58 (Older OTS maps using Custom Code v5.4)

Stage 1 and 2 - Custom Code v5.4

B58 Stage 1 and Stage 2 OTS Map v2.11 Slot Descriptions

Stage 2.5 - Custom Code v5.4

With OTS map update v2.15, you can access Stage 2.5 independent of Stage 2. You can also access ethanol mix up to E40:

Upgraded High Pressure Fuel Pump support

From the flashing menu, select the HPFP Installed option for B58TU pump, Spool Performance FX-150 & FX-180 or Dorch Engineering Stage 1 & 2. This will allow the ECU to properly control the pump. To gain any significant performance benefits of these high flow pumps, you’ll also need to select a Stage 2.5 map.

When using Stage 2.5, it is required to have an upgraded HPFP (B58TU, Spool Performance FX-150 and FX-180 or Dorch Engineering Stage 1 and 2) and downpipe.

To prevent unintentional damage, do not switch to this map without installing these upgrades and selecting HPFP Installed in the flashing menu first.


Limitations

Switchable map can only be achieved under the following conditions:

  1. Switchable maps must be available and enabled in your software (selected during flashing process). Currently, only available on F-Series Gen 1 B46/B48/B58 (non hybrids). G series will be available soon.

  2. Engine must be running (more than 30 seconds from start when using Custom Code v5.4 and earlier, Custom Code v6.0 can be used as soon as engine starts)

  3. (Custom Code v5.4 and earlier) Vehicle must be at a standstill.

Video

Watch our instructional video on YouTube to see how it works and read below for more info!

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MG Flasher @ 2021