Miller Performance offers the best stock ECU controlled Alpha N management solution for your early BMW M car. We have completely rewritten the engine software to allow the factory computer to operate the engine without an air flow meter or MAF sensor in place. This complete recoding of the engine software allows the Miller Alpha-N System to operate as if BMW intended the early model M cars to come factory equipped with a "MAF-less" system. Save the hassle of a standalone system which often costs thousands of dollars in parts and tuning time. The Miller Alpha-N Kit is totally plug and play. Unlike other factory ECU/Piggyback options, there is no wiring modifications required making our kit the easiest to install and revert to stock if ever needed.