Emissions question

RobertoGT

New Member
Jan 5, 2019
1
0
1
Virginia
Hey y’all,
Just bought a used ‘07 GT. It’s got a BBK xpipe and what looks to be high flow cats. There are pre-cat o2 sensors but nothing down stream. The car runs fine but I have a check engine light and you can smell that it is running really rich. It also has a ford performance cold air with supposedly a tune. I’d like to have a little better gas mileage and no engine light. Short of putting black tape over the light...where should I start?
 
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