WRXLink (04) - WRX104XThe Link G4X PlugIn ECU transforms your WRX into a precision tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required. Choose the Right Model Pin Check Required! The fastest and most reliable way to confirm you need the WRX104X is to check pins A1A3 on the OEM connector: Pins A1A3 have wires You need the WRX104X (this listing, 224 4000) Pins A1A3 are empty
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