Add some more horsepower to your BMW with this Injen Technology SP performance short ram air intake! The Injen engineers spent an abundant amount of time designing, testing, and perfecting the SP1123 to produce serious bolt-on power with amazingly killer Horsepower gains. In addition to the impressive power increase, the Injen team has ensured that a safe Air fuel (A/F) ratio has been maintained throughout the powerband. The soul of this short ram intake it is our mandrel-bent aluminum air intake tube that presents a smooth uninterrupted path for highly efficient airflow. Additionally, the SP1123 also includes a fully serviceable Injen SuperNano-Web dry air filter, which provides increased filter surface area, allowing for greater airflow and unbeatable filtration. This Injen SP performance intake provides power you can hear! It is a truly an upgrade for intake sound and provides an aggressive throaty tone, especially when you smash the hammer down. Do you want to add a personalized touch? Well, you are in luck, the SP1123 is offered in a polished (SP1123P) finish or a powder-coated wrinkle black (SP1123WB) or wrinkle Red (SP1123WR) finish. Plus, just like all other injen performance air intake systems, this intake kit includes the unbeatable Injen limited Lifetime Warranty!