How to use this Owner’s Manual

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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 ...

Maximum permissible inflation pressure
The maximum cold inflation pressure to which this tire may be inflated. For example, “300 kPa (44 PSI) MAX. PRESS” ...

Recommended shifting speeds
The best compromise between fuel economy and vehicle performance during normal driving is ensured by shifting up at the speeds listed in the following table. ...