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I've just checked again my Car Scanner app for short and long term fuel % trims after a 15 min drive, during which, by the way, I had no power...
Thanks guys for your comments. As I wrote in my first paragraph of my post, the upstream sensor was changed. Because the OEM was backorder for 2...
Here is my story: Last summer I got my muffler replaced, including the exhaust manifold. The catalytic convertor is the original, and has not...
