if you are running elevated boost its a very worthy upgrade, your car will be fed cooler and denser air, all while allowing for more aggressive boost. It reduces thermal stress across the board, and puts a tuned car in much better position to maximize power run after run. OE intercooler is junk imo.
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII