thanks for the help guys but I was thinking about the air/fuel ratio but in theory if i can change them through the computer and reset them ratio i should get more power right?

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2003 Ford ranger XLT 3.0L auto
6000k HIDs, step bars, airbox mod, blinker mod, 2 inch coil spring spacers, cb and pa speaker, custom console cover, honey comb edge grill, dual exhaust with 3" chrome tips, and alot more to add as soon as i get the money.