Overview Reviews Product Description Replace your existing non-resonated mid pipes with resonated mid pipes for additional sound tuning -- particularly recommended to be used with aftermarket downpipes. Product Videos Custom Field Product Reviews Write a Review Write a Review × AWE Tuning AWE Non-Resonated-to-Resonated Conversion Kit for BMW G20 M340i Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *