Active Autowerke Gen 2 Equal Length Mid-Pipe – BMW F87 M2 Competition / M2 CSAfter extensive R&D, Active Autowerke proudly introduces the Gen 2 Equal Length (EL) Mid Pipe a refined evolution of our best selling design. Now equipped with proprietary resonators, this updated system removes unwanted rasp while maintaining aggressive tone and volume. The added benefit? A significant reduction of the annoying 2k rpm buzz common in the S55 platform. Owners of the original EL mid pipe can take advantage of Active Autowerkes exclusive