Improved and Expanded Launch Control and Flat-Foot Shift for Subaru AccessPORT

COBB Tuning is pleased to announce the availability of Launch Control and Flat-Foot Shift* for all Subaru turbocharged manual transmission equipped vehicles. Launch Control limits engine RPM to a user-set value when launching to build boost and increase launch consistency. Flat-Foot Shift allows the user to maintain wide-open-throttle during gear changes, keeping partial boost between shifts and improving acceleration post-shift. This release of Launch Control and Flat-Foot Shift addresses isolated issues with the prior version and expands support to additional vehicles.** Please note that using Launch Control and Flat-Foot Shift (LC/FFS) can be abusive to the engine, clutch, transmission, axles and differentials. If you are willing to accept these risks, read on!

This release of Launch Control and Flat-Foot Shift now supports the following applications:

Currently Supported Vehicles
Launch control (LC) and Flat-Foot Shift (FFS):
– 2004-2008 Forester XT (MT only)
– 2005-2010 Legacy GT (MT only)
– 2007-2009 Legacy GT spec. B
– 2006-2011 WRX (MT only)
– 2004-2011 STI

Launch control (LC) only:
– 2002-2005 WRX (MT only)

Easy Implementation and Installation
To enable Launch Control and Flat-Foot Shift on your Subaru, download AccessPORT Manager version or greater to update the AccessPORT firmware to version or greater. Stage1 and Stage2 v3.00 Launch Control enabled maps are included in the firmware. In addition, all of the maps in our Subaru AccessPORT Map Database have been updated to v3.00 and are available for download. Simply select the v3.00 map that suits your power modifications, Reflash the v3.00 map as your ECU base map (not Realtime map) and configure the Launch Control and Flat-Foot Shift RPM settings to your preferences using the AccessPORT by navigating to Tune > Adjustments > Launch Control or Tune > Adjustments > Flat-Foot Shift.

ProTuned Map Conversion
Customers using ProTuned maps have two options for converting their map to enable Launch Control. These maps can be converted to a Launch Control enabled map using our online map conversion utility or your Pro Tuner may be willing to update the map for you. To use the online map conversion utility, click the link, click on the “Choose File” button, select the map on your computer to be converted and click the “Submit” button. Depending on the settings of your web browser, the new LC/FFS enabled map file will either be automatically downloaded or you will be prompted to initiate the download (and choose a download directory). Using AccessPORT Manager, load the new LC/FFS enabled map to your AccessPORT and you are ready to flash this map to your ECU. Note: This utility does not unlock ProTuner maps for use in AccessTUNER Race.

Custom Map Conversion
Customers using AccessTUNER Race maps also have two options for converting custom maps to enable Launch Control. Launch Control can be enabled map using our online map conversion utility or the map can be opened and saved using Subaru AccessTUNER Race version or greater. To get the latest version of AccessTUNER Race, open the software, click on Help > Updates > Check for updates. If your version of AccessTUNER Race does not have the auto-update feature, submit a new AccessTUNER Race Request Form in order to download the latest version of the software.

For further information and detailed instructions on enabling Launch Control and Flat Foot Shifting on your Subaru, please download our Launch Control and Flat-Foot Shift FAQ, call the COBB Tuning tech support line at 1-866-922-3059 or email us at

*Flat Foot Shifting is not available on 2002-2005 Subaru WRX 2.0L vehicles due to vehicle hardware limitations.

** This version of Launch Control and Flat Foot Shift is not compatible with the previous version, which is no longer supported. Note that the cruise control feature for setting RPM has been removed from this versionfor consistency across all platforms.


  1. hans nettel says

    My car whas pro tune and now LC and FFS are not working correctly,It seems that every time a use it, it pulls time and the car will only boost up to the wg spring rate wich is 14 lbs.the car is tune for 28 29 lbs. if I run the car not using these features,the car will boost up to 28 lbs. I talk to tuner and he tlod me he doesnt know why is doing this.He recomends not to use it, ha ha imagine that, I drag race the car, I got 545 awhp and to end up with a feature that I cant use, come on..

  2. Marshall says

    Have you been able to take any datalogs while attempting to use LC or FFS? If you have, we may be able to take a look at them to determine what is going on. Send an email over to and we’ll take a look! – Marshall@COBB

  3. Nick says

    According to my tuner, his maps always have these features enabled. However when I use the AccessPort 2.0 to modify the RPM for FFS and LC, nothing changes, still limits at red line. I went to use the utility in case it wasn’t enabled and it spits out a map that is not usable, no base map or some error. I did the updates as recommended to no avail. What could I be missing? The tune was done before AccessPort 3.0 came out, not sure exactly when, ( The previous owner had it tuned), could the actual maps be too old? Without these features enabled?

    2011 Subaru STI Hatch Stage 2 SD

  4. Marshall says

    Nick, it’s definitely possible that the map was created with a version of our software that pre-dated those features. If that is the case, you’ll need to have whoever created the Protune to open that map in a newer version of Accesstuner and re-save it.


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