Has anyone had trouble with their cat getting clogged. I've noticed my egt's have been higher than normal and they don't drop as quickly at idle as they used to. I was thinking the extra soot from the smarty has clogged the cat.
Any thoughts?

 

Is it way down on power, fuel economy off? I have never read of a cat getting clogged on one of these trucks. I have been running a Smarty Jr for about 29K miles on the 100hp setting and mine is not clogged.

 

I've had the Smarty jr for about 70,000 miles, but every now and again I clean the cat out.

There's a lever you need to push to clean it out, hold the lever for about 10 seconds and then let up on it. You can check it again after a few seconds and the soot dissipates. You'll see that the next time you operate the lever there is MUCH less soot, and the cat is nearly clean. Do this once a month or so.