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upper o2 sensors running lean after duel exhaust installation..any suggestions
Oh, and didnt cut out the cats.- jasonc216
- Post #2
- Forum: 2nd Gen Ford Expedition Engine & Performance
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J
upper o2 sensors running lean after duel exhaust installation..any suggestions
not sure if its fuel system related or what..looking for suggestions on how to fix it..03 Expedition W/ 4.6- jasonc216
- Thread
- Replies: 1
- Forum: 2nd Gen Ford Expedition Engine & Performance
