[Munch]

When you tune a car that doesn't already have a wideband do you just stick a sensor up the tailpipe or do you replace one of the existing O2 sensors while you tune?

Also, I want to install a wideband on my coupe but am a little confused on where to mount it. Some people say in the X pipe which sounds good to me but the manufacturer and a lot of other people say it needs to go before the cat (I have LG hi-flo cats). If I put it before the cat I worry that it will only be reading one bank. What should I do?

I'm putting the wideband in because I am adding a nitrous kit to the car if that matters.

Thanks