Okay i have a GST and im putting a big28 on it soon and want to upgade the fuel system. Now i know a Stand alone system is nice but whhat do the widebands do exactly im confused.

WBs allow you to monitor your air/fuel ratio, not like the narrowband, blinky lights, WBs are more useful to tuning.

Exactly that, narrowbands dont actually display anything concrete... just "RICH" "LEAN" or "NORMAL"... and its impossible to tune with. Everyone i see with a narrowband i call a ricer ;)