High HC and CO indicates rich fuel mixture... and there's no adjustments you can make on that.

There's a couple of easy things to check:
1) Make sure the engine is warmed up - the ECM runs the motor rich until everything is at normal operating temperature.
2) Clean the spark plugs.

If you're close, perhaps changing gasoline brands to one that has more oxygenates?

does it even seem like its passable though? if i run race gas, clean the plugs, and weld a cat on there?