This torque booster tube produces 10 max horsepower, 5lbs. x ft. torque and out-flowed the factory intake by 128%. Tube upgrade for 51-10461 or 54-10461. This engineered intake tube increases air flow and velocity by controlling the air intake dynamics. This is a very simple bolt-on product and requires no cutting or drilling.
This item fits the following BMWs:
2001-2006 E46 BMW M3, M3 convertible