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6 position chip
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  1. [7.3L - Aftermarket & Performance]
    I have a 1997 obs250. Previous owner has done some work to it like full exhaust, 6 position BullyDog chip, full cold air intake and a few other things. The truck was having issues starting and when it would take more than once to crank I found the chip wouldn’t work. Today I pulled the chip and...
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