The Ecumaster Nissan RB20/25/26 and SR20/(76 pin) P&P Adaptor allows for complete control and utilization of an Ecumaster EMU Black or Classic without the typical wiring difficulties associated with standalone management systems. This plug and play adaptor is designed to simplify installation and ensure optimal performance. It is also compatible with the MFD on R34 GTR models. Be sure to specify which Ecumaster ECU you intend to use (Black or Classic).