You can't "pull" 'em, you got to drill them. I wonder if the old pipe down the muffler and a 5 pound drilling hammer method works? It did wonders for the catalytic convertor on my car. Pounded the tar out of it, started the engine up and blew all the 'stuff" out the tail pipe. Runs a lot better now.

The crap the gummit comes up with to choke the power from our engines....un called for.