Thanks all, this is what I finally found. This make more sense now, with a catalytic converter looks like more work, AMUN, your correct... less headaches with non-catalytic... Thanks all.
How You Can Reduce Emissions The most effective means to reduce air pollution from wood-burning appliances is to buy a new, efficient, EPA-certified woodstove, or to install a catalytic combustor on your existing stove. Catalytic combustors are honeycomb-shaped devices that improve combustion efficiency by burning particulate matter and other gases before they escape up the stove pipe. Catalytic combustors come installed in some new stoves or may be retrofitted to them. They should be visually inspected at least three times every heating season and replaced according the manufacturer's recommendations. Some stove designs use baffles, secondary combustion chambers, and the introduction of secondary air to improve combustion efficiency.