For AFR's that mean anything you'll need a wide band, stock o2 sensors are for cruise afr's only

You will alway need a wideband controller for a wideband sensor....Unless your using an ecu with a controller built in (think Motec).

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]