Ive read several post and can't seem to get the answer. On 1994 f350 7.5 the Po eliminated the cat, I eliminated the air pump. The 02 sensor is still in place and no codes, so is it rich, lean or computer compensated?

 

It's running fine from your post.

Eliminating the cat only pollutes the environment more.

Eliminating the air pump won't hurt anything. It was used for dual cats from the factory to heat them up faster on cold starts and burn off the excessive pollutants.

 

The cat and air have nothing to do with afr. High flow cats don't really rob any power...if you upgrade the exhaust, consider using one.