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Home » Subaru WRX/STI » Electronics » Boost Controllers   HKS EVC Boost Controller for WRX/STI The HKS EVC has improved boost stability for maintaining pressure at high RPMs providing increased top-end power, and a new mapping feature allows boost pressure to be precisely tuned for throttle + RPM (or vehicle speed). The new EVC also offers a selectable kPa or PSI unit of measure, and a unique warning feature where if over boosting occurs, boost pressure can be programmed to drop to a user preset level. The new target boost setting makes setup and and tuning intuitive and simple.     Price: $595.00   « Previous | Next »