Post Cat O2 sensor

caged1 · 02-07-2011, 10:07 AM

Is this sensor used for fuel trim in any way or just cat inefficiency? this is on a 98 RS BTW.

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colorfull · 02-07-2011, 10:42 AM

It's used to adjust fuel trims but only on 2005+ Imprezas I believe.

02-07-2011, 10:07 AM	#1
caged1 Scooby Newbie Member#: 13932 Join Date: Jan 2002 Chapter/Region: MAIC Location: Coudersport PA, around Retards Vehicle: 1998 GM6-5MT+09XT Brilliant Red	Post Cat O2 sensor Is this sensor used for fuel trim in any way or just cat inefficiency? this is on a 98 RS BTW. * Registered users of the site do not see these ads.

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02-07-2011, 10:42 AM	#2
colorfull Scooby Newbie Member#: 136688 Join Date: Jan 2007 Vehicle: 2005 Impreza RS silver	It's used to adjust fuel trims but only on 2005+ Imprezas I believe.