Akrapovic Downpipe Stainless Steel Without/ Catalyst M2/G87 M3/G80/G81 M4/G82/G83

 this high-quality stainless-steel downpipe has the catalytic converters removed. Delivering a pure racing sound full of emotion, this provides great feedback at high revs, without drone. Remapping the ECU is mandatory to prevent potential check engine light warning signals.