Easy to install. Affordable. Reliable.   G4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential from your car.   This ECU fits inside the factory OEM enclosure. Installation is a breeze, with no alteration of the factory wiring loom required for the models listed below.  This ECU is designed for the RX7 series 6 13BT. Please check your pinout connector matches the header in the listed photo before purchasing.   This ECU works for manual transmissions only.   Check the features tab for I/O expansion options.  This ECU will need a modification before E-Throttle is usable. Suitable applications: FD3S Series 6 RX7 This ECU will support naturally aspirated, parallel twin or single turbo configurations. Does not support sequential control of the stock twin turbos.  Download manual here Download full G4X specifications here.