You don't understand what a CAI is otherwise you'd know it already has one. This topic has been beat to death if you do some searching. Without doing some custom work to the intake itself, no intake variation will make a difference at all. Just keep a nice clean OEM filter and leave it alone. The M103 is a great engine, but to make power, other than a higher flowing exhaust, your only "real" options are an engine swap or a Twin Turbo setup ($7500-$16000)

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