Hey guys, I'm rebuilding my exhaust slowly because I currently have a leak on my manifolds, and Y pipe flange.

I ordered a set of Flowtech longtube headers, and need to order a pair of extensions behind them that bolt to the collector. My current setup has a bung between the two pipes going to the Y pipe where the o2 sensor sits. I found some collector extensions that only have one o2 sensor connection. Do I need an o2 sensor on each side of my exhaust if I'm running true dual with no cats, or will the one on the passenger side suffice?

Truck is 95/302/auto/MAF

 

No, if you have one o2 sensor thats all you need.

 

It will work, but it won't be right. You want it right put in an H or X pipe and put the oxygen sensor there so it can read both sides.

 

Good to know, I am putting longs on but I am going to make a custom y into the converter, I was going to get a bung collector but I will put it after the 2 pipes join.