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Performance Guide
Performance Guide
Here's where you can learn everything about modifying your WRX. We put lots of other good knowledge here, too.
WRX Performance
STi Performance
Going Faster - Engine and Drivetrain Modifications
Turning Better - Suspension, Wheels, and Tires
Stopping Shorter - Brake Upgrades
Other Performance Hints
Frequently Asked Questions
Events
What kind of cars do the Mach V staff have? Are they modified?
Mach V GC Impreza Project Car
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