Quote Originally Posted by PaulP View Post
My downstream o2's are turned off, i plugged the driver o2, the passenger has my wideband in it. i have the wide band wrapped in heat tape and installed this over it
http://www.designengineering.com/cat...fire-wrap-3000
Yea, that is the exact same stuff I used on my O2 wires. They still cooked and I had none of the wire exposed including where the wires enter the sensor. Friends used the same insulation with the same effect. It just gets so hot in there that even that insulation can't stop the effects over a long time. I would probably weld in a new bung further upstream near where the upstream O2 is located and then install the wide band there.