hi kev i have a power commander pc3 (i think it is its the first usb one) (not that it will talk to my pc at the min going to get dynojet to reflash the firmware)anyway please explain to me what i need to do with my 02 sensor to run a rolling road custom map with stage 2 dna akropvic pipes and blocked ais ? do i use a eliminator and if so what type ? thanks in advance ashley (also any hints on tightening up my counterbalance shaft i think its the course of my knocking i have gained)