Just got back from Steve Jordan's motorcycles with my Speed Twin. Had a power Commander 6 fitted and the O2 sensors eliminated. I had just fitted a Motone X-pipe and installed a K&N air filter , stock exhaust still in place. Wanted the de-cel popping removed and just adjusted so anything was smooth and safe. Power up across the range max 84.83 was, now 88.66bhp. Torque was 99N/m, now 105.