How To: Ford EcoBoost Mustang Transmission Brake and Bump Box
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Things To Look Out For
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WARNING - TRANSMISSION BRAKING AND BUMP BOX FEATURES ARE ABUSIVE TO THE ENGINE, CLUTCH, TRANSMISSION, AXLES, TIRES, AND DIFFERENTIAL. THE USER ACCEPTS ALL RISKS AND RESPONSIBILITIES WHEN USING THIS FEATURE |
Threshold Requirements for Use of These Features
Accessport Model Compatibility
APv3 AP3-FOR-003: 1.7.3.0-14822 or greaterMap Compatibility/Requirement
COBB OTS Mapping, v5.02+ onlyCurrently, there is no Protuner support for these features (transbrake, bump box). An update will be released soon to address that.Applicable Model/Year
Mustang EcoBoost 15-17, AT (automatic transmission) onlyHow To Enable Transmission Braking
To enable transmission braking, navigate through the following menus, starting at the main menu:
TuneAdjustments
Enable Transbrake and/or Transbrake 2-Step
How to Enable Bump Box
Transmission braking bump box is enable as a result of enabling the Transbrake feature, so you do not need to enable this feature separately.
Steps to Use Transmission Braking
Automatic Transmission Vehicles
Steps to Use Bump Box
Automatic Transmission Vehicles
- For street tires we recommend using values between 12-15.
- For drag tires we recommend using values between 15-20.
Available Adjustments and How to Make Them
Adjustments to transmission braking and bump box feature are configurable on the APv3.
Adjust transmission braking settingsTune
Adjustments
Change Transbrake 2-step RPM (Default Transbrake RPM must be configured within Accesstuner)
Adjust bump box settings
Tune
Adjustments
Change Transbrake Bump Delay (we've found that a delay between "12-15" works well for a car on street tires)