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this was my prototype made. since then i went 4 inch skunk 2 velocity stack intake. Intake has a hole cut out on top of the cone to suck in the air. Good job BMW DOUBLES. Great effort and doing it for less than what i paid. This is a night and day difference especially upstairs. The sound is amazing at that.
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N55 GENERAL 
David Shoup Tuned
Fully Built By Miami Engines/Project Motorworks
Precision 6266 On Steroids |