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The Torque Solution plug-and-play speed density kit is listed for 2008–2014 Subaru WRX and 2008–2021 STI applications. It provides the wiring and adapter components to convert supported WRX/STI ECU setups to speed-density operation without extensive splicing, intended for tuners and builders who need a PnP wiring solution for those model years.
Torque Solution 08-14 Subaru WRX / 08-21 STI PNP Speed Density Kit
