Catalytic bypass pipe u-torque design, manufactured by m&m in Germany. The u-torque design compensates for the backpressure loss while running without cats. The design minimizes the loss of low end torque and adds 10-15 ft-lbs of torque in the mid and top range of the rpms. Why settle for the traditional cross over cat design when you can add torque in the mid-range and minimize the loss of torque down low where the 997 's need it most! Ecu software is necessary !

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.