gotta love the vast mis-information in this thread.
a few points:
-terry with BMS and other reputable n54 tuners have proven that scoups & drop in filters don't do shit for performance
-dci's from bms/vishnu/eas are the best open dci element intakes, as they have the least amount of restrictions. afe, injen, etc have bends and narrow pipes, which cause restrictions
-cold air intakes from stett or similar do
slightly lower iat's, but i haven't seen convincing evidence that the single filter element provides the same amount of air as dci's.
-mr.5 style closed box intake w/ snorkel or similar may be the best best for low ait's, low wastegate duty cycle, quiet operation, etc.