i fucking passed, and have no clue as to how
i have a 1989 gt 5.0
quite a few mods on it actually, i was actually hoping that my car was low enough not to go on the dyno. but i have aftermarket headers from BBK, custom mid pipe no cats, and flowmaster american thunder series. no cats are on the car.
state standard for carbon monoxide is 1.20 and i pumped out .13
good ole 5.0, i have more mods then that but the point is i passed. nice clean motor