This plug and play JB4PRO add on harness for the BMW B58 and S58 platforms connects an ethanol sensor and an additional pressure sensor to the JB4PRO system. Includes a PNP 12v adapter and safety fuse for a simple clean install.
For those running port injection also get the add on port injection harness which connects the JB4PRO flex fuel harness to your six additional port fuel injectors.
