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Pre-cat O2 Change
So I just changed the pre-cat O2 yesterday and I noticed a bump in power after 5 mins of driving. I'm not sure if this O2 was factory but I've never changed it in the 3 years (about 30K miles) that I have owned it. The car had 102K (165k km) when I bought it and it now has 132K (213k km).
I noticed I was getting around 21-24 MPG so I'm hoping to see an increase from that.
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2003 Alero 2.2 Ecotec Auto - Cosmo intake - cleared/painted headlights
Last edited by Dobbie : 09-19-2011 at 11:26 AM.
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Linear Mode
