I'm looking at installing an LC-1 WBO2 into my 2003 WRX. I'm currently running a Nvidia Catted DP, TiTek UP, and a Espelir JGT500 Catback.
I'm wondering the best mounting location for the Bosch O2 sensor. My DP does have a highflow cat, so i'm assuming i need to mount upstream of this. Do I need to have a bung welded right ontop of the bellmouth opening (where Cobb DP's have their bung), or is there somewhere else that would be better/easier to mount?
What about the front O2 sensor in the right wheel well, or the rear O2 (but behind the cat?)? Can would it be better to replace one of these and then use one of the analog outs to feed narrowband to the ecu?
Sorry if this is a stupid question... I've new to all this, and just want to make sure I mount it in the best location possible. I've searched and found different people saying different mounting locations, but i was just hoping someone with knowledge of my UP/DP would be able to chime in with a solid answer.