BMW Z4 (2003-2005) MS45 ECU Tune - Alpha-NSee our full write up for more details and other tuning options! Alpha N: We are the ONLY tuners which can offer forced induction Alpha N tunes for MS45. With an Alpha N tune, the MAF sensor is eliminated, and load is calculated based on throttle plate angle (Alpha) and engine rpm (N). The advantages of alpha n tuning are: background compensation tables are bypassed; internal ECU airflow and load limiters become irrelevant; the tuning process is
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