I put a set of magnaflows on mine with new stainless pipes. Removed the catalytic converters aswell. Replaced both O2 lambda sensors and I love the noise it makes. Makes harley guys stop and stare. Yes. It is loud. Stomp on the loud pedal and it really raises hell. You probably do need an unlocked ecu because I definitely had to add fuel to the entire map. The g56 pipes were great. But they were cracked on my machine when I got it. improved throtle responce and all that jazz. But the noise is just fantastic. The sound now matches the look.
