does any know what the difference between different companies that make wideband and which one is more bang for buck and why?? And just curious, could this http://cgi.ebay.com/ebaymotors/TINTE...QQcmdZViewItem be used as a wideband? my friend is trying to say it is a wideband but i want to prove he's wrong so need help.

 

That one isn't a wideband. It is a narrow band.

And there is more wideband info here https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/another-wideband-thread-opinions-wanted-43848/

 

Anything that says it connects to your narrowband 02 sensor is just for a light show. Don't expect to pay anything under 250 for a wideband. Thats including the gauge and sensor