Want more power? During testing aFe's Pro5R E36 M3 intake system squeezed out 25 hp and 25 lb/ft of torque. This aFe Stage 1 system includes a one-piece heat shield made of 16-gauge, poweder-coated steel. The conical filter is constructed of 100% polyurethane for long life and multiple cleaning cycles. The E36 M3 aFe Stage 1 intake requires remarkably little assembly so installation is a breeze.