They have an anti-rotation feature that prevents the terminals from spinning when tightening the nuts

To end this problem once and for all

Wasted Spark

including the F20

87 mm bore size for 3460 cc displacement

ReFlex+ Advanced I/O Integration | BMW N55 200762 They have an anti-rotation featureThe ReFlex+ Advanced I O Integration module is engineered for BMW N55 owners who want complete control over their performance builds. More than just an auxiliary injector controller, the ReFlex+ brings high end ECU features to your N55 at a fraction of the cost. Whether running standalone tuning or fully integrated with CAN Bus platforms, the ReFlex+ provides unmatched flexibility, precision, and reliability. Perfect for sequential port injection,