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.  Designed for the RX7 series 7-8 13BT.  Please check your 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.   Suitable applications:  FD3S Series 7 RX7   FD3S Series 8 RX7  This ECU will support naturally aspirated, parallel twin or single turbo configurations. Does not support sequential control of the stock twin turbos. G4X PlugIn Key Features (where applicable): Up to 6D fuel and ignition mapping Precision closed loop cam control (four cam, independent control) Sequential fuel delivery Digital triggering, all OEM patterns OEM idle hardware supported