 Okay. All right. If it no longer stumbles and stalls, I'm betting you've got a bad mass error. Now, the way I would confirm that is by use of a lab scope. And I would look at signal output and watch it. Does it drop out? It's not something you're going to see with a voltmeter. It's obviously not something you're going to see with the naked eye. But that would get me to that point. If the mass airflow makes no difference, if none of this makes any difference...