Well, if they go thru EPA certification requirements, the data exists at the very least at EPA Headquarters. Whether the test sites have the data or not doesn't mean the database doesn't exist. Logically, it can't NOT exist. I work for the Government. Databases exist for everything you could imagine, and some things that would baffle you.
That is logical and I retract some of my previous statement!, but it still doesn't answer the question as to whether or not the person ON SITE performing the testing knows if I should or should not have a Catalytic converter under my truck.....

And I second what Cattletrkr said!!!Oo.