See also:

New Chassis Tuning for 2011
The Subaru Impreza WRX STI was already a highly optimized performance machine. Specific chassis tuning. Aluminum front lower L-arms reduce unsprung vehicle weight. Major chassis tuning changes inc ...

To enter the passive mode
If you wish to program the passive arming mode, have it done by your SUBARU dealer. ...

Total trailer weight
Total trailer weight The total trailer weight (trailer weight plus its cargo load) must never exceed the maximum weight shown in the following table. ...