I had a narrow band once. It never worked and it made my car throw codes when it was hooked up. Unhooked the pigtail and hooked it back up normally and no more codes. Sell it ! I got mine (auto-meter as well ) with a gauge pod so mine went in the trash!
I have a wideband now. Picked this model up for 169.00 shipped.
http://compare.ebay.com/like/1207379...=sbar&_lwgsi=y