Hi guys, I've been searching around but no one seems to really talk about this.. Do I need an O2 sensor eliminator if I were to put on a Gman bully? I believe M109Rs in Australia come with O2 sensors yea? I've seen some threads talk about interference between O2 sensors and PCV or PowrPro, but none seem to mention Gman Bully. Planning to pull the trigger on Bully and ATRE from Gman, but need to know if I should get the eliminator. Running stock pipes now, and most likely keeping my pipes stock. Thanks in advance!