E46 325, 330 with C38 blower AA Supercharged Cars Operating Instructions

Always allow your engine and supercharger to warm up for at least one minute before placing the car in gear. In colder weather (below 50 degrees Fahrenheit), we recommend at least two-to-three minutes of warm-up time. Always use the best fuel (93 octane) available. If 91 octane is the only available fuel, add an octane booster if you detect any knocking. Active Autowerke calibrates the software to operate on 91 octane, but some cars may experience slight knocking or detonation. Excessive knocking will damage the motor, so pay close attention to any hint of knocking.
On Steptronic or automatic transmission models, we recommend that the transmission be set in “Sport” mode when the car is driven hard. This will allow the transmission to shift more quickly to prevent any excess slippage. Additionally, after driving hard in an automatic-equipped car, you should allow the car to cool off for at least one minute before shutting off the motor. This will allow your transmission fluid to cool off. It is also a good idea to follow this procedure in order for the supercharger to cool off properly.

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