FEATURES: Material: 304 Stainless Steel, and the Flange Material is Mild Steel Complete set inclusive 300cell Euro3D4 metal sport catalysts! Some adjustments and modifications will be necessary in order to install the system This is one of the most effective ways to gain more power on a 6cyl. E46 Model. This manifold inclusive a sport endmuffler increases the power on a E46 330I. On our test 330I it got approximately +20HP, and got the max torque up with additional 37NM!. The system makes the car louder, so we recommend to install a sport endmuffler that isn´t too loud! 1 year warranty for any manufacturing defect
