e-Manage "Blue" - p/n 15500500 (sold seperately) to the factory ECU wiring harness.
(Required for Injector Control adjustments on the e-Manage)
Installation help see: http://greddy.com/tech-support/e-manage/
Connect wires to the "Main Harness" included with the e-Manage unit.
* recommend to soder wires to the factory ECU wiring harness