aFe Momentum Intake Replacement Air Filter w/Pro DRY S 4 IN F x 6 IN B x 4-1/2 IN x 8-1/2 IN Engine Components>Block Off Plates You must have adjustable control

You must have adjustable control arms in order to adjust rear toe after eliminating the stock eccentric bolts

as Injen also offers this intake system in multiple finishes

Tein 11-17 BMW X3 (F25) EnduraPro Plus Shock - Rear

The cold side pipe also aides in balancing airflow from the intercooler to improve performance and also helps lower engine damaging exhaust gas temperatures (EGTs)

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418006

aFe Momentum Intake Replacement Air Filter w/Pro DRY S 4 IN F x 6 IN B x 4-1/2 IN x 8-1/2 IN Engine Components>Block Off Plates You must have adjustable controlWith three layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil free" conical performance filter provides maximum convenience and easy maintenance with excellent airflow. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Pliable polyurethane flange with integrated bumps insures