i need help with a few things; p1131 and more can any body help??????

it is an upstream O2 sensor code what are you wanting to know?

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1998 Project Black Stallion
4.0 built by me with .030 pistons comp cam head and intake work. 3" BL explorer rear spring and a t-bar crank comp x-alloys on 33" BFG AT TA KO's

1987 Project Blackfoot
2.3 soon to be turboed with a 4/5 drop and 18's not sure which ones yet and a complete redo of the interior