Antilag (Launch Control)

Instructions for using antilag can be found here: https://mgflasher.atlassian.net/wiki/spaces/MGFLASHER/pages/684032005

 

MG Flasher’s Antilag offers two modes: Stationary and Rolling. Antilag, also known as two-step or launch control, is a method used to temporarily increase acceleration performance (by increasing air pressure in your intake) during either a stationary or rolling launch. The side effect of using antilag (with ignition cut) may result in backfire (often a highly desired effect). The MG Flasher app provides simple and expert adjustable parameters for standing and rolling antilag. This will allow for an aggressive, flame-spitting two-step when parked followed by a safer, smoother rolling-launch (or vice versa) without having to reflash! Many safety parameters have been added to allow precise control over your car, including: min/max coolant temperature, max EGT, max IAT, max duration and a over-boost threshold. You can even decide the aggression of the torque limiter when these safety parameters are exceeded!

Where Custom Code v6.9 offers only Ignition Cut for, spitting flames, holding RPM, and building boost. We have released Custom Code v6.9.1 to introduce another method, Fuel Cut. The new method is significantly safer on your vehicle because it causes less stress. Fuel Cut will NOT spit flames! Users will be able to choose between the two methods.

Works with manual or DCT transmissions, in any gear, with any driving mode (eco, comfort, sport, etc.) at any speed.

 

Beta testing teaser: https://www.instagram.com/p/CWrd4hGJur6/

Shared by @m140_ben (beta tester)

Adjustable Options

  • Enable Expert Mode

  • Pedal position for activation

  • Speed threshold to detect rolling

  • Activation delay to enable antilag

  • Max antilag duration (timeout)

  • Rolling Options

    • Aggression

    • Boost setpoint

    • RPM minimum for rolling engagement

    • RPM maximum for rolling engagement

  • Standing Options

    • Aggression

    • Boost setpoint

    • RPM setpoint

 

  • Pedal position for activation

  • Speed threshold to detect rolling

  • Activation delay to enable antilag

  • Max antilag duration (timeout)

  • RPM hold method (Cut ignition or fuel)

  • Rolling Options

    • Ignition aggression (higher means more timing retard)

    • Lambda aggression (higher means richer)

    • Boost setpoint

    • RPM delay until cut

    • RPM minimum for rolling engagement

    • RPM maximum for rolling engagement

  • Standing Options

    • Ignition aggression (higher means more timing retard)

    • Lambda aggression (higher means richer)

    • Boost setpoint

    • RPM delay until cut

    • RPM setpoint

  • Safety Options

    • Emergency mode deceleration aggression

    • Coolant temperature minimum

    • Coolant temperature maximum

    • Exhaust gas temperature maximum

    • Intake air temperature maximum

    • Over boost limiter

Example Videos

Shared by @m140_ben (beta tester)

 

Safety shutdown (Emergency mode)

You can log the parameter “Custom Code: Antilag Shutdown Reason”, or CC_ASR for short, to see the cause for the last shutdown event. Value resets to zero upon entering next antilag event.

Safety shutdown is engaged when:

  • Engine coolant temperature (Tmot) is out of bounds: “Coolant temperature min” (CC_ASR == 1) and “Coolant temperature max” (CC_ASR == 2).

  • Exhaust gas temperature (EGT) before turbo (Tabg_vl_xab) is greater than “Exhaust gas temperature max” (CC_ASR == 4).

  • Intake air temperature (tans_msg) is greater than “Intake air temperature max“ (CC_ASR == 8)

  • Intake manifold boost pressure (Ps) is greater than “Boost pressure setpoint” + “Over boost limiter“ (CC_ASR == 16)

  • Usage duration exceeds allowed amount (CC_ASR == 32)

Antilag Shutdown Reason, CC_ASR (Decimal)

Issue

Antilag Shutdown Reason, CC_ASR (Decimal)

Issue

1

Min coolant temperature exceeded

2

Max coolant temperature exceeded

4

Max exhaust gas temperature (EGT) exceeded

8

Max intake air temperature (IAT) exceeded

16

Max intake manifold boost pressure exceeded

32

Max duration exceeded (CC >v6.9.1 only!)

Limitations

Antilag can only be achieved under the following conditions:

  1. Car must be warmer than “Coolant temperature min“ to engage.

  2. Must be within the “Safety shutdown” parameter bound.

  3. For users with Custom Tunes, please refer to the information on this page to gain access to this feature:
    https://mgflasher.atlassian.net/wiki/spaces/MGFLASHER/pages/616988673

Adjustable Options (for Custom Code v6.9, Obsolete!)

  • Enable Expert Mode

  • Pedal position for activation

  • Speed threshold to detect rolling

  • Rolling Options

    • Aggression

    • Boost setpoint

    • RPM minimum for rolling engagement

    • RPM maximum for rolling engagement

  • Standing Options

    • Aggression

    • Boost setpoint

    • RPM setpoint

 

MG Flasher @ 2021