99 WRX

The MXS 5.0 (part# 40-206) offers a unique eight-step approach to battery care. Fully automatic microprocessor controlled charger with built-in automatic temperature sensor features a unique combination of advanced charging modes and makes the new MXS 5...

TS-0203-1016 Dual outlet-type BOV designed specifically for the Subaru 98-00 Forester and MY99 WRX. The Kompact Dual Port vents both to the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation during normal...

AEM's Wideband Failsafe Gauge provides the ability to accurately tune AFR, while actively protecting your engine by constantly monitoring AFR curves and activating a user-defined failsafe strategy if it runs lean. The Wideband Failsafe Gauge is a...

AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN-bus stream that is output by the factory ECU,...