From everything I've read (keep that in mind as I don't have a DP, but have BMS dual cones)....the BMW OEM intake is so damn efficient that the gains you will see from a new intake are negligible compared to a new DP (2 to 3 times more HP gains with the DP). DP is the way to go, no question. If you want to do both....I'm sure others will chime in.
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