Volvo B230 ECU Master Black PnP Complete plug-and-play kit for Volvo B230 engines, including the ECU Master EMU Black, a pre-assembled wiring harness, and a Bosch LSU 4,2 wideband lambda sensor. This all-in-one solution is designed for seamless installation in Volvo 240, 740, 940, or any custom build running a B230 engine. The system is fully compatible out of the box, making your ECU upgrade quick, clean, and reliable. Just add the software tune, and you are good to go. The PnP wiring harnesses are hand-built, assembled, and validated by professional motorsport wiring specialists within the EU to ensure maximum durability, accuracy, and performance. Included parts: ECU Master EMU Black Volvo B230 ECU Master Black Engine harness Bosch LSU 4,2 See the detailed connector description below for full compatibility information. Cockpit side connectors ECU Master Black 39 39-pin Delphi, FCI, Sicma ECU Master Black 24 24-pin Delphi, FCI, Sicma Power connector 12-pin Delphi GT150 Engine bay sid