J.M.O.,

narrow band O2 sensors are very, very slow to react.

You can use them, but I would only use one for checking wide open throttle or idle. And that would be it.

Even @ idle a narrow band just jumps all over the place, not too great or easy to read.

And like strokersix said,"you will use it more than once or twice..."

Previous Q. So, gbauer
what RPM are you taking the engine to?

http://autoplicity.com/98092-innovate-mo...r-bung-and-plug

http://www.ebay.com/itm/Innovate-NEW-384...870&vxp=mtr
Just get, & be done w/it. wink

MBHD

12 port SDS EFI