Redben...yep it is closed loop and I did have the O2 sensor eliminators installed....I took off the eliminators once I disconnected the PCIII...thanks for the question and sorry I forgot bout that detail.

 

i had the pclll and the canned map did not work for my bike. all i had was rush slip ons and big sucker breather. i had a dyno tune done and it was great. i then changed pipes and it was off again and canned maps did not work. i sold the pclll for 150 in the forum and bought a used thundermax for 450 and easy instal and works great and i dont have to ever pay to have it tuned. it adjust for temp, altitude and fuel. love it. simple and it works.